Q1 (a) convex (b) concave (c) concave Q2 given, f=10cm R = 2f = 2 x 10 = 20cm Radius R = 20 cm. Q3 Without touching the mirror, we still can identify the type of that mirror. We can identify them just by merely standing in front of it. If the image is of same height and upright it might be a plane mirror. If the image is inverted and when moved closer the image is highly magnified, it is a concave mirror. If the image formed is diminished, it is a convex mirror. We can also identify them by looking at the mirror whether it is flat, bulged or curved inwards. I thank Manocha academy to teach topics in the simplest way and making study more fun to learn ! I thank you so much ..
Q1 a) Convex mirror b) Convave mirror c) Concave mirror (?) Q2 ) f = r/2 therefore r = f×2 and the r= 10× 2 = 20 cm. Q3) A plane mirror is a flat surface which reflects the image clearly. A Concave mirror is an inverted image of original object and also it is a magnified image. A Convex mirror is a mirror in which basically we can se many things fitted in the image obtained or objects get divereged into the mirror.. thanks alott for such a good explaination it made the chapter so easy to understand...👍👍
Q.1 a)convex mirror b)plane mirror c)concave mirror Q.2 Given: f-10cm f=R/2 10=R/2 10×2=R R=20cm Q.3 plane mirror: plane mirror has a flat surface and parallel beam of light will reflect in parallel. Concave mirror: Concave mirror is a spherical surface and reflection will be converge. Convex mirror: Convex mirror is also a spherical surface the reflection will be diverge.
But the answer b is concave because it is diverging ray ex of put a paper and parallely distance tilted downward when the sun rays meet the magnifying glass the rays meet at one point so the paper burns
Q1 A. Convex B. Concave C. Convex Q2 Radius of curvature is 20cm because the focal length is equal to half of the radius of curvature Q3 In the plane mirror the size of the image on mirror is equal to size of the object In the concave mirror the size of the image is greater than size of the image In the convex mirror the the size of the image is smaller than the size of the object So we find the type of mirror without touching him
Answers: (Qs 1) (a) convex (b) concave (c) concave (Qs 2) f = R/2 f × 2 =R R= 10 × 2 R= 20 cm (Qs 3) We can distinguish b/w them by standing in front of the mirrors or placing an object in front of then so that we distinguish b/w them by the images formed on the mirrors. Btw the lesson was really good it helped a lot .. Thankyou sir💜👍🏻💯
1(a) convex mirror (b) concave mirror (c) concave mirrir 2 ) 20cm 3 ) plane mirror : has a flat surface and same hight concave mirror : it is the only mirror wich are inverted or magnified convex mirror : smaller and always upright and diminished sir please tell me if this is correct or wrong
Q1 (A) convex mirror (B) concave (C) concave Q2)Focal lengths is 10 cm then f=r/2 r=f*2 => r=10*2 => r=20cm Q3) by seeing the image formed in the different mirrors can distinguish the types of mirror without touching the surface of the mirrors Thank you 😌
1 a) convex mirror b) concave mirror c) concave mirror 2 20 cm 3 plane mirror will show same height image. concave mirror will show inverted Image and when brought closer will be magnified. convex mirror will show the objects small.
Sir Q1. a) convex mirror b) concave mirror c) concave mirror Q2)20cm Q3)Plane mirror will give image of same shape and height. Convex mirror will give diminished and upright image. Concave mirror will give inverted and magnified image.
Super! All your answers are correct :) Also try the Quiz for this video on my Website. Quiz button is below the video: www.manochaacademy.com/physics/light/l/concave-and-convex-mirrors
The Top Three Questions: 1.a) Convex Mirror 1.b) 1.c) Concave Mirror 2) The radius of curvature will be the double of the focal length i.e. 10x2 cm = 20 cm. 3) We can distinguish between a plane mirror, concave mirror and convex mirror by looking into each of them. The plane mirror will give us an image of the same height, while the concave mirror will give an inverted image and when looked closer, it will become straight and magnified. In the convex mirror, the image will be shorter and diminished, no matter the distance between the object and the mirror. (Sir, I have a doubt in the 1st question, number 'b' as I don't know the type of mirror used in a solar furnace and its purpose. This is my one and only doubt. Other than this, I have no doubt or problems and my concept is clear.) Thanks, Shreyansh Dutta.
1 ) a ) Convex mirrors are used in shop security mirrors. b) Concave mirrors are used in solar furnace c) A concave mirror is used by dentists to examine teeth. 2) The radius of curvature is exactly twice the focal length so the answer is 20cm . 3) If you look into a plane mirror, you can find that the size of the image is same as that of the object. If you look into a concave mirror, you can see an enlarged image when placed close and can see an inverted image when kept away. A convex mirror always forms a small and erect image.
These are the answers for the top 3 questions sir ! THANK YOU I AM A KID WHO IS DOING OLYMPIAD SO I HAVE TO LEARN THESE LESSONS !! thank you so much sir ... your vidoes are great sir ! DO YOU HAVE ANY QUIZES FROM THIS LESSON SIR ??😀😀
Answers below- 1) a)Convex(because the image formed in the shop security mirror is diminished) b)Concave (because the image formed in the solar furnace is magnified) c) Concave (because the image formed in the mirror by dentists is magnified) 2)We know that focul=radius/2. So if focal length is 10 cm the radius of curvature will be focal x 2. So 10 x2 will be 20 cm.And that’s the answer. 3)Plane mirror is a flat surface which reflects light .Also the body will be of the same height and erect. Concave mirror is curved surface which reflects light.The image will be magnified and inverted. Convex mirror is a surface which reflects light and is curved outwards.The image is diminished. Hope this helps. P.S- Would love to have a like
Sir my answers are 1) a) convex mirror b) concave mirror c) concave mirror 2) If f= R/2 then R = f×2 = 10× 2 = 20 cm 3) Plane mirror = parallel rays remain parallel Convex = diverging mirror Concave = converging mirror
Q1.ans.(a) concave (b) plane mirror (c) convex Q2.ans. radius of curvature= f/2 Here,f= 10 So,10/2= 5 cm Q3.ans. if image is in same size of ours then it is plane mirror. If image formed is inverted and magnified then it is concave mirror If image formed is diminished then it is convex mirror. Thank you sir for clearing my all confusion between concave and convex mirror. 😌😄
(Question first`s B part) "Concave mirror is used in the solar furnace because concave mirrors are the only type of mirror that reflects light toward a single focal point".
Top 3 questions : 1 - A) Convex Mirror B) Concave Mirror C) Concave Mirror 2 - Since F = R/2, R = F x 2 = 10 x 2 = 20 3 - A plain mirror will show a upright and normal image, a concave mirror will show an inverted or if you go close a magnified image, a convex mirror will show a small but upright image.
1)(a) convex mirror (b) plane mirror (c) concave mirror 2)Focal length=r/2 10=r/2 10×2=r r=20 3)Plane mirror: The surface is flat, the beam of light is parallel and forms upright image of same size Concave mirror: The surface is curved inwards, the beams of light converge at a point and forms inverted image or magnified and upright image Convex mirror: The surface is curved outwards, the beams of light divergence from a point and forms upright and diminished image
Preparing for competitive exams but this portion of physics was always too difficult for me But you made it very easy, now I can understand the concept Thanks a lot sir❤️
a) convex: as it cover large area b)concave:rays are converged to focal point C)concave : to focus on exact area 2: F=R/2 10=R/2 R=20 3: Plane mirror:forms actual image Concave: image is inverse and magnified Convex: image is diminished and smaller size Thank u sir.....👏
Q1- (a). Convex mirror (b). Concave mirror (c). Concave mirrors Q2- Focal length= half radius of curvature of mirror. So, radius of curvature is 20cm. Q3- Plane- Same size as in real world Concave- magnified close Convex- Covers large area, wide image
1a)convex b)plane c)concave 2 20cm 3 plane mirrors form an upright image of same size convex mirrors form an upright yet diminished image concave mirrors form an inverted image from afar and a magnified and upright image from nearby
1 a. Convex mirror b. Concave mirror c. Concave mirror 2. f=r/2 10=r/2 10×2=r r=20 3. There are two ways you can distinguish between plane, Concave and convex mirrors- •plane mirror - the reflective surface is flat concave mirror - the reflective surface is curved inwards convex mirror- the reflective surface is curved outwards OR •plane mirror- when an object is held in front of it, the image appears to be the same size concave mirror- when an object is held in front of it, the image appears to be inverted. If the object is held very close to the surface of the mirror, the image appears to be magnified. convex mirror - if an object is held in front of it, the image appears to be diminished.
1. A. Convex B. Concave C. Concave 2. R=2f So, R = 2*10=20cm 3. Plane: if the image formed is of the same size of the object. Concave : if the image formed is magnified or image of the object is enlarged. Convex : if the size of the image is less than the object.
Q1 a. Convex mirror is used in shop security mirror so as to give a wide view b. Plane mirror is used in solar furnace c. Concave mirror is used be dentist to examine teeth because of its magnification Q2 If f = 10cm, R = f×2 = 10 × 2 = 20cm Q3. Plane mirror - The image will be the same as the object - the image will be at the same distance as the object - the image will be erect and virtual Concave mirror - The image will be inverted at first but when move closer, it will be magnified Convex mirror - The image will be smaller than the object - it gives a wide view of image
a ) shop security mirror is a convex mirror as it provide greater view of the surroundings. b) for a solar furnace a concave mirror is used as it is a converging lens and converges the sun's rays to a particular point. A lot of heat is provided to that particular point where the food is cooked. c) dentists use a concave mirror as it is a converging mirror and creates a magnified image thus helping the dentist to properly see the teeth.
Answer of 1=A. Convex B. Convex C. Concave 2. The radius 20. 3. Plane mirror have flat surface Concave mirror have magnified images Convex mirrors have short images
Q1. (a) convex mirror (b) concave mirror (c) concave mirror Q2. If focal length is 10 cm. f=R/2, then R=f×2 R=10×2 R=20cm Q3. A plane mirror reflects the same height, image. A concave mirror reflections converge forming an inverted image when the object is afar and enlarged, upright if object is near. A convex mirror reflections diverge forming a diminished or reduced image of the object.
First question = a.) Convex mirror b.)i am not sure but concave mirror c.) Convex mirror Second question = given focal length = 10cm so since radius =f/2 to gind f use f=radius×2. f=10cm×2=20cm Third question= plane mirrors show us the same hight like the real object and the image is upright Concave mirrors they can show as inverted and magnified images when we get close it gets magnified and when we get far from it it gets inverted Convet mirrors they cover larger area for as to see and the rays are demnished Thanks sir now i have an improved understanding about mirrors correct me if i am mistaken in my answers 🖒 Thanks
Answer 1. 1) first one is plane mirror 2) Second is conves mirror 3) Third is concave mirror Answer 2.) Its radius is 20cm Answer 3.) a) if we stand in front of plane mirror we appare same as we stand . b) if we stand in front of concave mirror it will focus our image and we appere more close . c) if we stand in front of a convex mirror it will cover whole area around us as it we will look shorter in the mirror.
1. 1). CONVEX 2). CONCAVE 3). CONCAVE 2. ) focal length = radius/2 10 = r/2 r = 2×10 r = 20 Therefore The Radius is 20 3. ) We can distinguish them by the way they look or the way they give out the image
Excellent, i have read at many places, but never i got the concept as clear as it is here.. great.. Please keep on going and make the concepts simple.. it would help lot of learners
Q-1 a) convex mirror as it gives a wide field of view.... b) concave mirror as it is a converging mirror and it will bring all lights concentrated at a point.. c) concave mirror as it gives magnified image of teeth. Q-2 R=2f R=2(10)=20 cm Q-3..... We can see our image in those mirror and can observe the following points : in plane mirror our image will be as same size as we are...... In concave mirror our image will be inverted or magnified..... In convex mirror our image will be diminished
1-a convex. b concave. c concave. 2- Focal length - Radius/2 So, Radius - focal length .2 10 multiply by 2 So 20 cm. 3- plane mirror is flat. Concave mirror is curved inwards and has shiny surface. Convex mirror is curved outwards.
1. a. Convex mirror b. Concave mirror c. Concave mirror 2. 20 cm 3. When we place an object in front of a plane mirror it is of the same height. In front of a concave mirror , it appears inverted. In front of a convex mirror it looks small and diminished.
MY ANSWERS 1) a)Convex b)Concave c)Concave 2) The focal length of a mirror is R/2 therefore Radius of curvature will be F*2 = 10cm*2 = 20cm 3) A plane mirror does not converge or diverge the beam of light. The distance between the object and the mirror. In a concave mirror, we appear inverted and diminished when kept far away from us and when kept near to the object it appears magnified and erect. In a convex mirror, far away objects appear to be near. I hope all my answers are correct.
Q1. (a) convex mirror (b) concave mirror (c) concave mirror Q2. f=10 f=R/2 then R=2(f) R=20 Q3. by just looking at the mirror for example: plane mirror have plane surface , concave mirror have curved inner surface and convex mirror have curved outer surface.
3 ans If you look into a plane mirror, you can find that the size of the image is same as that of the object. If you look into a concave mirror, you can see an enlarged image when placed close and can see an inverted image when kept away. A convex mirror always forms a small and erect image.
*Note* : *👉In Concave mirror image is inverted, diminished in two cases only* 1. *Object at infinity distance* 2. *object at beyond center of curvature* 👉 *If object is placed at center of curvature then image is inverted and "Same size as the object size"* *👉If object is placed between C & F and Object is at F then the image is inverted, enlarged or magnified*
Q1. (a)convex mirror (b)concave mirror (c)concave mirror Q2. As we know that focal length is the half of radius and radius is double of focal length so radius is equal to double of focus Radius= 2*focal length R=2*10cm =20cm So the radius is 20cm 1 Q3.By standing in front of all the three •If the image is exactly equal to person or the substance. •If we go close to a concave mirror it becomes mangnified and if the distance is increased then it forms magnified and virtual image. •It will always form virtual image ,it will form an upright image if you are near the focus..
Question no 1: a)convex mirror b)? c)concave mirror question no 2: ANS: radius of curvature = 2focal length. so, radius = 2×10=20 question no 3: PLANE MIRROR: The size of image is same as the object , image is virtual ,image is laterally inverted. CONCAVE MIRROR: The image is inverted , and when we bring the mirror closer the image gets magnified. CONVEX MIRROR: The image is formed on the bulging side of the spherical mirror and the image is small. 😊😊
Q 1-( a) convex mirror (b) plane mirror (c) concave mirror Q 2- r= 20cm Q 3- Palne mirror is a mirror which has flat surface and the parallel beams are tracked on the surface and form a virtual image. Concave mirror is a type of spherical mirror which is only mirror that form a real image. Convex mirror is also a spherical mirror which diverges the rays and the image formed in it is dimnished.
Very good!! Q1 and Q2 are correct! Q3 Different mirrors will give different types of images. That's how they can be identified. Do check out more videos at bit.ly/2KBC0l1
a. Convex b. Concave C. Concave 2. 20 3. The mirror is erect in the plane mirror while in concave it is upright opposite to real when at a far distance and magnified when nearer and in convex the image is shorter or smaller than we are .
1.Convex.2,plane.3.concave 2.if FP(f)=10 cm FP(r)×2=20cm 3.Plane mirror has a flat surface.Concave mirror has an inner curved surface and convex has an outer curved surface. Thank you very much for letting me know this topic
This topic was very confusing I had watched hundreds of videos but never understood the topic now that I have watched your video all my doubts are cleared. Thank you!
Sir, thanks for this kind of explanation. Ans- 1. a- convex, b- concave, c- concave 2. Radious of curvature- 20 cm 3. We can distinguish by observing our image in the mirror.
1. a) convex b) concave c)concave 2. 20 cm 3. plane mirror : if we place an object in front of it, it will be of the same height and size concave mirror: the object if placed in front of it, the image thus formed will be inverted and when the object gets closer to the mirror, the image will be magnified convex mirror: this mirror gives us a wider view of objects
Sir the answers sir give reply (a) convex - to get a larger field of view (b) concave (c) concave - to get clear image of teeth 2 . F : 10 cm R : 20 cm 3. by passing a light beam!
@@kiddies_world8757 Given F=10cm R=? We know the focal length is equal the radius of curvature divide by two F=R/2 Multiply the number of focal length into two 10x2= 20cm that’s all 😊
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Q1
(a) convex
(b) concave
(c) concave
Q2
given,
f=10cm
R = 2f
= 2 x 10
= 20cm
Radius R = 20 cm.
Q3
Without touching the mirror, we still can identify the type of that mirror. We can identify them just by merely standing in front of it. If the image is of same height and upright it might be a plane mirror. If the image is inverted and when moved closer the image is highly magnified, it is a concave mirror. If the image formed is diminished, it is a convex mirror. We can also identify them by looking at the mirror whether it is flat, bulged or curved inwards.
I thank Manocha academy to teach topics in the simplest way and making study more fun to learn ! I thank you so much ..
Q1
a) Convex mirror
b) Convave mirror
c) Concave mirror (?)
Q2 ) f = r/2 therefore r = f×2 and the r= 10× 2 = 20 cm.
Q3) A plane mirror is a flat surface which reflects the image clearly.
A Concave mirror is an inverted image of original object and also it is a magnified image.
A Convex mirror is a mirror in which basically we can se many things fitted in the image obtained or objects get divereged into the mirror.. thanks alott for such a good explaination it made the chapter so easy to understand...👍👍
Q.1 a)convex mirror
b)plane mirror
c)concave mirror
Q.2 Given: f-10cm
f=R/2
10=R/2
10×2=R
R=20cm
Q.3 plane mirror: plane mirror has a flat surface and parallel beam of light will reflect in parallel.
Concave mirror: Concave mirror is a spherical surface and reflection will be converge.
Convex mirror: Convex mirror is also a spherical surface the reflection will be diverge.
But the answer b is concave because it is diverging ray ex of put a paper and parallely distance tilted downward when the sun rays meet the magnifying glass the rays meet at one point so the paper burns
Q1
A. Convex
B. Concave
C. Convex
Q2
Radius of curvature is 20cm because the focal length is equal to half of the radius of curvature
Q3
In the plane mirror the size of the image on mirror is equal to size of the object
In the concave mirror the size of the image is greater than size of the image
In the convex mirror the the size of the image is smaller than the size of the object
So we find the type of mirror without touching him
Answers:
(Qs 1)
(a) convex
(b) concave
(c) concave
(Qs 2)
f = R/2
f × 2 =R
R= 10 × 2
R= 20 cm
(Qs 3)
We can distinguish b/w them by standing in front of the mirrors or placing an object in front of then so that we distinguish b/w them by the images formed on the mirrors.
Btw the lesson was really good it helped a lot .. Thankyou sir💜👍🏻💯
Hatsoff to you sir. I learner in byjus,vedantu,aakash and even unacedemy. But your physics is the best. God bless you.
Hey where do u leave😄😊
Hat yaar chikna acha nhi padhata h
Gadha h
@@pcmumar6475 ye bekar nhi padate tera dimag free fire khelete khelte gobar br gya h
😏😏kuch samajh me aata h iski video se bade aae free fire wale bhat
Better than online classes 😉
Yes it is right . It is beter then online classes
Thanks for liking
Haa
Yes that better than online classes
Ya correct
Anybody watching this video in 2024
😂😂😂me
Me
Me❤😂
Yes lol
Me 😂 . Watching this for my O/L s
1(a) convex mirror
(b) concave mirror
(c) concave mirrir
2 ) 20cm
3 ) plane mirror : has a flat surface and same hight
concave mirror : it is the only mirror wich are inverted or magnified
convex mirror : smaller and always upright and diminished
sir please tell me if this is correct or wrong
All correct 💯💯💯
op bolte
Q1
(A) convex mirror
(B) concave
(C) concave
Q2)Focal lengths is 10 cm then
f=r/2
r=f*2 => r=10*2 => r=20cm
Q3) by seeing the image formed in the different mirrors can distinguish the types of mirror without touching the surface of the mirrors
Thank you 😌
Hu
Q
Good 👍
Intelligent 🤭😔
Wow!! Very intelligent; right answers👍👌✔
you explain everything in a easy manner and also in a practical ways sit god may bless you with 100 million subs on youtube
Yes I am satisfied with you
Op thought
Achha mazak hai
Yup your indian
I reckon with you
1 a) convex mirror
b) concave mirror
c) concave mirror
2 20 cm
3 plane mirror will show same height image.
concave mirror will show inverted Image and when brought closer will be magnified.
convex mirror will show the objects small.
He explains better than school teachers and has a thinking of student struggles so he talks as if he is our friend .
Glad to hear that
If u say so but as to me no one will replace my physical trs
Agree
Yes
Agree
Sir Q1. a) convex mirror
b) concave mirror
c) concave mirror
Q2)20cm
Q3)Plane mirror will give image of same shape and height.
Convex mirror will give diminished and upright image.
Concave mirror will give inverted and magnified image.
Super! All your answers are correct :) Also try the Quiz for this video on my Website. Quiz button is below the video: www.manochaacademy.com/physics/light/l/concave-and-convex-mirrors
The Top Three Questions:
1.a) Convex Mirror
1.b)
1.c) Concave Mirror
2) The radius of curvature will be the double of the focal length i.e. 10x2 cm = 20 cm.
3) We can distinguish between a plane mirror, concave mirror and convex mirror by looking into each of them. The plane mirror will give us an image of the same height, while the concave mirror will give an inverted image and when looked closer, it will become straight and magnified. In the convex mirror, the image will be shorter and diminished, no matter the distance between the object and the mirror.
(Sir, I have a doubt in the 1st question, number 'b' as I don't know the type of mirror used in a solar furnace and its purpose. This is my one and only doubt. Other than this, I have no doubt or problems and my concept is clear.)
Thanks,
Shreyansh Dutta.
1 b) concave mirror (കോൺ കേവ് )
@@moinuonline can you feel me why a concave mirror is used in a solar
Anybody else watching in July 2024😂😂
Me
Me
I dey watch some for July 😊
Me .....
1 ) a ) Convex mirrors are used in shop security mirrors. b) Concave mirrors are used in solar furnace c) A concave mirror is used by dentists to examine teeth. 2) The radius of curvature is exactly twice the focal length so the answer is 20cm . 3) If you look into a plane mirror, you can find that the size of the image is same as that of the object. If you look into a concave mirror, you can see an enlarged image when placed close and can see an inverted image when kept away. A convex mirror always forms a small and erect image.
These are the answers for the top 3 questions sir ! THANK YOU I AM A KID WHO IS DOING OLYMPIAD SO I HAVE TO LEARN THESE LESSONS !! thank you so much sir ... your vidoes are great sir ! DO YOU HAVE ANY QUIZES FROM THIS LESSON SIR ??😀😀
Hi
keep it up!!!
No.1 youtube channel for education with practical examples..thank you so much sir🙏🏻
It's my pleasure
Super video sir you explain is very good it is better than our school teachers
EVERY STUDENT WANTS PHYSICS SIR LIKE YOU😀😀
Wow Thanks
Q1. a. convex mirror
b. concave mirror
c. concave mirror
Q2. 20cm
Q3. Plane mirror - Flat surface
concave mirror - curved inwards
convex mirror - curved outwards
He explains better than school teachers and has thought of student struggles so he talks as if he is our friend and explains so good.
Thanks sir.
1)a convex
b concave
c concave
2) 20
3)plane mirror
-erect image
- same size as object
Concave
- inverted
- magnified
Convex
- smaller
- upright
Lol you have helped me a lot a day before exam memorising the concept....Thank you sir!!!
Glad to hear that
@@ManochaAcademy Really?
Same here....I have my exam tomorrow
Sir thank you. You didnt cut the spherical ball. It was a cadboury gems box which you opened
Dude same here 😏
Sir i never comment on any type of video on youtube.. But your way of teaching is mind blowing.. I love your way of teaching.. And gain knowledge.. 💕💕
It's my pleasure
I have no words to explain your teaching Style 👌
Glad to hear that
He
A.convex
B..concave
C.concave
2.20cm
3.by looking at shape
6:06 it's a Cadbury's gems ball 😅😂 amazing prop for demonstration!!!!!
sir did not even cut it , it is the opening part of the gems ball
Yes, right 😊
Lol
True🤭🤭
@@arunkumarm9718 obviously omg
I searched out for many videos of lenses but I now think that why didn't I watched your video first? awesome video 👏👏👏
It's true
All concept cleared....every school want a teacher like u....
Answers below-
1)
a)Convex(because the image formed in the shop security mirror is diminished)
b)Concave (because the image formed in the solar furnace is magnified)
c) Concave (because the image formed in the mirror by dentists is magnified)
2)We know that focul=radius/2.
So if focal length is 10 cm the radius of curvature will be focal x 2.
So 10 x2 will be 20 cm.And that’s the answer.
3)Plane mirror is a flat surface which reflects light .Also the body will be of the same height and erect.
Concave mirror is curved surface which reflects light.The image will be magnified and inverted.
Convex mirror is a surface which reflects light and is curved outwards.The image is diminished.
Hope this helps.
P.S- Would love to have a like
Excellent thaku I was serching for answers
Your explanation is very clear and perfect . we understood very clear.
Thank you sir
You are most welcome
Sir my answers are 1) a) convex mirror
b) concave mirror
c) concave mirror
2) If f= R/2 then R = f×2 = 10× 2 = 20 cm
3) Plane mirror = parallel rays remain parallel
Convex = diverging mirror
Concave = converging mirror
Yes sahana you are right 👍💯
Dude this is the best thing I've watched and actually understood from 😭 Thank you so much 😭💘
Most welcome
Hi
@@mohamedmamdouh3172 exams tomorrow?
Q1.ans.(a) concave
(b) plane mirror
(c) convex
Q2.ans. radius of curvature= f/2
Here,f= 10
So,10/2= 5 cm
Q3.ans. if image is in same size of ours then it is plane mirror.
If image formed is inverted and magnified then it is concave mirror
If image formed is diminished then it is convex mirror.
Thank you sir for clearing my all confusion between concave and convex mirror. 😌😄
(Question first`s B part) "Concave mirror is used in the solar furnace because concave mirrors are the only type of mirror that reflects light toward a single focal point".
20 cm will be the right answer
Top 3 questions :
1 - A) Convex Mirror
B) Concave Mirror
C) Concave Mirror
2 - Since F = R/2, R = F x 2 = 10 x 2 = 20
3 - A plain mirror will show a upright and normal image, a concave mirror will show an inverted or if you go close a magnified image, a convex mirror will show a small but upright image.
Your answers are right because it's match with me 😁🤣
@@anushkabartwal9462 and your answers are right because i want😗.
never understood mirrors this easily. Thank you for sharing sir!
You are most welcome
Excellent explanation sir I see many videos before but i didn't understand when I saw your video i understand clearly🎉
1)(a) convex mirror
(b) plane mirror
(c) concave mirror
2)Focal length=r/2
10=r/2
10×2=r
r=20
3)Plane mirror: The surface is flat, the beam of light is parallel and forms upright image of same size
Concave mirror: The surface is curved inwards, the beams of light converge at a point and forms inverted image or magnified and upright image
Convex mirror: The surface is curved outwards, the beams of light divergence from a point and forms upright and diminished image
Preparing for competitive exams but this portion of physics was always too difficult for me
But you made it very easy, now I can understand the concept
Thanks a lot sir❤️
Ans-। Convex mirror
Ans-2. 20
Ans-3. By seeing our reflection in
Mirrors.
a) convex: as it cover large area
b)concave:rays are converged to focal point
C)concave : to focus on exact area
2: F=R/2
10=R/2
R=20
3:
Plane mirror:forms actual image
Concave: image is inverse and magnified
Convex: image is diminished and smaller size
Thank u sir.....👏
2: R=20
Q1- (a). Convex mirror
(b). Concave mirror
(c). Concave mirrors
Q2- Focal length= half radius of curvature of mirror.
So, radius of curvature is 20cm.
Q3- Plane- Same size as in real world
Concave- magnified close
Convex- Covers large area, wide image
Wow 😮 man what a class on mirror !! Thank you 🙏 Sir
The concept is totally clear to me now ❤️
Glad to hear that
@@ManochaAcademy realy
@@bhavanarathod298 no
😒😒
1. Convex Mirror , b. Convex Mirror , C. Concave Mirror
2. F= 2R = 10×2 =20
3. In Plane mirror rays will remain parallel . In convex mirror rays diverges . In concave mirror rays converges.
Thanks sir it helps alot 👍
1a)convex
b)plane
c)concave
2 20cm
3 plane mirrors form an upright image of same size
convex mirrors form an upright yet diminished image
concave mirrors form an inverted image from afar and a magnified and upright image from nearby
1 a. Convex mirror
b. Concave mirror
c. Concave mirror
2. f=r/2
10=r/2
10×2=r
r=20
3. There are two ways you can distinguish between plane, Concave and convex mirrors-
•plane mirror - the reflective surface is flat
concave mirror - the reflective surface is curved inwards
convex mirror- the reflective surface is curved outwards
OR
•plane mirror- when an object is held in front of it, the image appears to be the same size
concave mirror- when an object is held in front of it, the image appears to be inverted. If the object is held very close to the surface of the mirror, the image appears to be magnified.
convex mirror - if an object is held in front of it, the image appears to be diminished.
Thanks a lot sir
You are making future of this country
Best teacher i had listened to
Thank you!! Great to hear that you liked the video!! Do share it with your friends and family :)
1.
A. Convex
B. Concave
C. Concave
2. R=2f
So, R = 2*10=20cm
3. Plane: if the image formed is of the same size of the object.
Concave : if the image formed is magnified or image of the object is enlarged.
Convex : if the size of the image is less than the object.
Q1
a. Convex mirror is used in shop security mirror so as to give a wide view
b. Plane mirror is used in solar furnace
c. Concave mirror is used be dentist to examine teeth because of its magnification
Q2
If f = 10cm, R = f×2 = 10 × 2 = 20cm
Q3.
Plane mirror
- The image will be the same as the object
- the image will be at the same distance as the object
- the image will be erect and virtual
Concave mirror
- The image will be inverted at first but when move closer, it will be magnified
Convex mirror
- The image will be smaller than the object
- it gives a wide view of image
a ) shop security mirror is a convex mirror as it provide greater view of the surroundings. b) for a solar furnace a concave mirror is used as it is a converging lens and converges the sun's rays to a particular point. A lot of heat is provided to that particular point where the food is cooked. c) dentists use a concave mirror as it is a converging mirror and creates a magnified image thus helping the dentist to properly see the teeth.
1.concave mirror
2.20cm
3.flat mirror gives same height,
Concave mirror gives magnified image when very closely and inverted image from distance,
Convex mirror gives diminished image
I am from somalia I watched this video me and my classmates when prepared final exam 2019-2020 -keep going teacher
Keep watching
Where is Somalia, guy reply me
Mana Telugu vallu anta manchi chustunnaru
@@RakeshKumar-en9vt somalia is east africa are you known?
@@saadaqabdirahmansalaad2640 thank you i needed that answer for my home work
Brilliant way of teaching
Thanks
@@ManochaAcademy welcome
Tell me all the questions
Very nice yes you say right brilliant way of teaching
Q1-a)convex
b)concave
c)concave
Q2- 20cm
Q3-By observing the reflection of each mirror
Great lesson I enjoyed while also learning
Answer of 1=A. Convex
B. Convex
C. Concave
2. The radius 20.
3. Plane mirror have flat surface
Concave mirror have magnified images
Convex mirrors have short images
Q1.
(a) convex mirror
(b) concave mirror
(c) concave mirror
Q2. If focal length is 10 cm.
f=R/2, then R=f×2
R=10×2
R=20cm
Q3.
A plane mirror reflects the same height, image.
A concave mirror reflections converge forming an inverted image when the object is afar and enlarged, upright if object is near.
A convex mirror reflections diverge forming a diminished or reduced image of the object.
Solar furnanc isn't plane mirror
It's gonna be concave as it converge all the light rays to specific point called the focus which can later be converted into solar energy
ok, tnx for informing me
A good video for beginner like me . thank u I really enjoyed the basics of optics chapter.
Glad it was helpful!
First question = a.) Convex mirror
b.)i am not sure but concave mirror
c.) Convex mirror
Second question = given focal length = 10cm so since radius =f/2 to gind f use f=radius×2. f=10cm×2=20cm
Third question= plane mirrors show us the same hight like the real object and the image is upright
Concave mirrors they can show as inverted and magnified images when we get close it gets magnified and when we get far from it it gets inverted
Convet mirrors they cover larger area for as to see and the rays are demnished
Thanks sir now i have an improved understanding about mirrors correct me if i am mistaken in my answers 🖒 Thanks
c shall be concave as dentist has to see the teeth closely so he can take precis operation btw im in 7th class
Tomorrow is my physics exam, and when this topic was taught in online classes I muted it and played game. But sir, you helped me a lot, Thankyou Sir.
Most welcome
Ff
Abe dhyan dena chahiye tha na sala game ki dukan
@@surendrarajput9609 🤣
Answer 1.
1) first one is plane mirror
2) Second is conves mirror
3) Third is concave mirror
Answer 2.)
Its radius is 20cm
Answer 3.)
a) if we stand in front of plane mirror we appare same as we stand .
b) if we stand in front of concave mirror it will focus our image and we appere more close .
c) if we stand in front of a convex mirror it will cover whole area around us as it we will look shorter in the mirror.
Sir, I like your explanation, it makes me easy to understand, God bless you
1. 1). CONVEX
2). CONCAVE
3). CONCAVE
2. ) focal length = radius/2
10 = r/2
r = 2×10
r = 20
Therefore The Radius is 20
3. ) We can distinguish them by the way they look or the way they give out the image
Excellent, i have read at many places, but never i got the concept as clear as it is here.. great.. Please keep on going and make the concepts simple.. it would help lot of learners
Legends are here 1 day before exam 🤣😅😅😅😅😅
Correct
Nope
Good
Yes
Yes tomorrow is my exam
awsome....I my self a teacher but never saw such a great explanation
Q-1 a) convex mirror as it gives a wide field of view....
b) concave mirror as it is a converging mirror and it will bring all lights concentrated at a point..
c) concave mirror as it gives magnified image of teeth.
Q-2 R=2f
R=2(10)=20 cm
Q-3..... We can see our image in those mirror and can observe the following points : in plane mirror our image will be as same size as we are...... In concave mirror our image will be inverted or magnified..... In convex mirror our image will be diminished
Question
1.
a.convex
b.concave
c.concave
2.20cm
3.by seeing in it as u shown
1-a convex.
b concave.
c concave.
2- Focal length - Radius/2
So, Radius - focal length .2
10 multiply by 2
So 20 cm.
3- plane mirror is flat.
Concave mirror is curved inwards and has shiny surface.
Convex mirror is curved outwards.
1. a. Convex mirror
b. Concave mirror
c. Concave mirror
2. 20 cm
3. When we place an object in front of a plane mirror it is of the same height.
In front of a concave mirror , it appears inverted.
In front of a convex mirror it looks small and diminished.
MY ANSWERS
1)
a)Convex
b)Concave
c)Concave
2)
The focal length of a mirror is R/2 therefore Radius of curvature will be F*2 = 10cm*2 = 20cm
3)
A plane mirror does not converge or diverge the beam of light. The distance between the object and the mirror.
In a concave mirror, we appear inverted and diminished when kept far away from us and when kept near to the object it appears magnified and erect.
In a convex mirror, far away objects appear to be near.
I hope all my answers are correct.
Q1. (a) convex mirror
(b) concave mirror
(c) concave mirror
Q2. f=10
f=R/2 then R=2(f)
R=20
Q3. by just looking at the mirror
for example: plane mirror have plane surface , concave mirror have curved inner surface and convex mirror have curved outer surface.
3 ans If you look into a plane mirror, you can find that the size of the image is same as that of the object.
If you look into a concave mirror, you can see an enlarged image when placed close and can see an inverted image when kept away.
A convex mirror always forms a small and erect image.
Seriously you put a lot efforts for us.
.
.
.
.
Thank you dear!
Thanks :) Do share the video with your friends and family!
Tqsir
Sir your way of teaching is great👍
Thanks for liking
*Note* :
*👉In Concave mirror image is inverted, diminished in two cases only*
1. *Object at infinity distance*
2. *object at beyond center of curvature*
👉 *If object is placed at center of curvature then image is inverted and "Same size as the object size"*
*👉If object is placed between C & F and Object is at F then the image is inverted, enlarged or magnified*
Sir you are the combination of good teaching and creativity.
Thank you sir, thank you so much for teaching us. Now I am your new subscriber sir.
Thanks and welcome
With your teaching I understand a lot
Really nice explanation sir....... 👌👌👌 I never watch a class like this with practical knowledge.....u make the subject easier....thanks a lot sir.....
Thanks and welcome
why does he stare into my soul like that 💀 4:55
@Wednesday Frog frfr
Q1. (a)convex mirror
(b)concave mirror
(c)concave mirror
Q2. As we know that focal length is the half of radius and radius is double of focal length so radius is equal to double of focus
Radius= 2*focal length
R=2*10cm =20cm
So the radius is 20cm
1
Q3.By standing in front of all the three
•If the image is exactly equal to person or the substance.
•If we go close to a concave mirror it becomes mangnified and if the distance is increased then it forms magnified and virtual image.
•It will always form virtual image ,it will form an upright image if you are near the focus..
Question no 1:
a)convex mirror
b)?
c)concave mirror
question no 2:
ANS: radius of curvature = 2focal length. so, radius = 2×10=20
question no 3:
PLANE MIRROR: The size of image is same as the object , image is virtual ,image is laterally inverted.
CONCAVE MIRROR: The image is inverted , and when we bring the mirror closer the image gets magnified.
CONVEX MIRROR: The image is formed on the bulging side of the spherical mirror and the image is small.
😊😊
Sir, i must say u are amazing......ur videoes are easy to understand.....looking for more videoes....👍😊
Thanks a lot :) Do check out more Videos, Quiz and Top 3 Questions on my website: www.manochaacademy.com
The best teacher I found on youtube...
Q 1-( a) convex mirror
(b) plane mirror
(c) concave mirror
Q 2- r= 20cm
Q 3- Palne mirror is a mirror which has flat surface and the parallel beams are tracked on the surface and form a virtual image.
Concave mirror is a type of spherical mirror which is only mirror that form a real image.
Convex mirror is also a spherical mirror which diverges the rays and the image formed in it is dimnished.
Hey I wanna talk to you about your answer 🖐🏻
1.
(a) convex mirror
(b )concave mirror
( c)concave mirror
2.
Radius - 20 cm
3.
Plane mirror is like a scale .
Very good!! Q1 and Q2 are correct!
Q3 Different mirrors will give different types of images. That's how they can be identified.
Do check out more videos at bit.ly/2KBC0l1
a. Convex
b. Concave
C. Concave
2. 20
3. The mirror is erect in the plane mirror while in concave it is upright opposite to real when at a far distance and magnified when nearer and in convex the image is shorter or smaller than we are .
Moaj kr di
1 question 1. Convex mirror 2. Concave mirror 3. Concave mirror
2 question 1.20
3 question 1. Plane mirror has flat image
2. concave mirror seemed like a cave and inverted image
3. convex mirror gives short image
Thankyou for your great explanation
🤣🤣🤣🤣🤣sad life
Iam not answered to see him but to my clarity I had a happy life bro 😂😂😂
Which mirror is used in solar furnace as well as why that particular mirror is used????
Could all the mirrors be used in it???
Solar furnace uses concave mirror to converge the light rays to a point to get high temperature.
@@ManochaAcademy thank u sir....
Concave mirror
The best class on this particular topic ❤️🙏🏼
Thanks for liking
Thank you so much....... It cleared all my doubts
1.Convex.2,plane.3.concave
2.if FP(f)=10 cm
FP(r)×2=20cm
3.Plane mirror has a flat surface.Concave mirror has an inner curved surface and convex has an outer curved surface.
Thank you very much for letting me know this topic
ur 1st main 2nd is is wrong solar furnace is concave but still kudos for gving it a shot 👏👏
This topic was very confusing I had watched hundreds of videos but never understood the topic now that I have watched your video all my doubts are cleared. Thank you!
Thanks brother. I never heard this type of explanation with perfect daily life examples. We want this type of practice knowledge.
Great to hear that you liked the video :) Thank you!! Do check out more videos at www.manochaacademy.com
Great explanation sir,teachers like you are highly needed in education system
true
Thanks a ton
Sir, thanks for this kind of explanation.
Ans-
1. a- convex, b- concave, c- concave
2. Radious of curvature- 20 cm
3. We can distinguish by observing our image in the mirror.
1. a) convex
b) concave
c)concave
2. 20 cm
3. plane mirror : if we place an object in front of it, it will be of the same height and size
concave mirror: the object if placed in front of it, the image thus formed will be inverted and when the object gets closer to the mirror, the image will be magnified
convex mirror: this mirror gives us a wider view of objects
Super!! All answers are correct :) Also try the Quiz on my website: www.manochaacademy.com/physics/light/l/concave-and-convex-mirrors
How to express sir, mind blowing session. My all doubts disappeared. Thank you Sir
Sir the answers sir give reply (a) convex - to get a larger field of view
(b) concave
(c) concave - to get clear image of teeth
2 . F : 10 cm R : 20 cm
3. by passing a light beam!
Sir please give reply
1. (a).Convex mirror
(b). Plane mirror
(c). Concave mirror
2. Radius=20cm
3. Plane mirror has a flat surface
Concave mirror is inverted
Convex mirror is upright
How do you sum up and have 20cm???
@@kiddies_world8757 Given F=10cm
R=? We know the focal length is equal the radius of curvature divide by two F=R/2
Multiply the number of focal length into two 10x2= 20cm that’s all 😊