Light in One Shot | Physics - Class 8th | Umang | Physics Wallah

📝 For complete notes of Lectures, visit Umang Batch in the Batch Section of PhysicsWallah App/Website.
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▶️Complete CLASS 8TH - SCIENCE ONE SHOT Lectures - • Science - Class 8th NCERT
In this lecture of Umang batch, Alok sir is going to teach you the chapter light.
Topics covered in this lecture are:
•What is light?
•Properties of light
•What makes things visible
•Laws of reflection
•Properties of image formed by plane mirror
•Regular and diffused reflection
•Kaleidoscope
•Structure of eye
•Care of eye
There are many other important chapters that we are going to cover in upcoming videos for class 8. Stay tuned with PhysicsWallah Foundation.
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🔴 Details about the batch -
• Recorded Lectures for Class 8th Students.
• PDF Notes of each Lecture will be available on the PW App.
• Weekly Lecture Planner will be uploaded on PW Foundation Community Page.
• Classes will start from 10th January and we will cover the whole syllabus by 10th March.
🎦 Eight Lectures per week will be uploaded.
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#Science #Class8 #Umang

[@suryanshKashyap-ul7gg]

Paisa school me de rahe hai Aur padhne you tube pe aa rahe hai 😁kitne great hai ham🙏

[@Adjtikkiyt01]

Hamara sch to bilkul muft hai lekin GSS nahi hai

[@user-dx7iu9nh4m]

😂😂

[@geetashashikanth8121]

😂😂

[@bravegirlups]

Us ka matalab ye nahi hai😂

[@zax69]

​@@Vardhanraj893Arey chulbule uska mtlb h school Wale Paisa lete h par padhane ke naam pe 0 aur yaha free

[@BantiKumar-vi7sw]

Annual exam se phle kon kon dekh rha h??😂

[@mamtasahoo2894]

Me 😅

[@cisfcm]

Bhai annual exam se pahle he dekhta hai non-sence man

[@poojabhargav7290]

hum

[@user-pr8jp4zb1g]

Me

[@LavishArt78]

Me

[@a.k.rtechnicals8858]

Kash jab mai 8th me tha, tab aise teacher milte mujhe

[@abhivlog1076]

Kyun bhaiya ❤️ apne physic nhi padha tha .

[@a.k.rtechnicals8858]

@@abhivlog1076 are bro i am in 12th, mai to aise hi dekhne aa gya tha,btw I am a science student so i know this physics very well☺☺☺☺

[@NavneetKumar-de4lx]

Mujhe bhii yaar 😇😇

[@noname_xD_]

@@a.k.rtechnicals8858 mebi..😞

[@_Harekrishna_330]

Koi ni aab pdh lo

[@Matrix0_23]

Who play this video in 2x 💀

[@parthkhandekar4994]

Are you from lexicon

[@Glossyrose_883]

Me...😂

[@DevanshGameBlitz]

Me 😂😂

[@mothra_gg]

Mee

[@shavistaanjum5827]

1.5

[@supericonic04]

Legends watching 1 day before exam at 2x speed😂💀

[@sakshijha2574]

Yeah broooooo

[@user-zf8ft4si1o]

O balay oy

[@killerboss6011]

School me iss chapter ko padhane me 4 din lage aur yaha ek one shot me hee clear ho jata h😂😂😂😂😂👍👍

[@LaxmidharaMartha-rs8rx]

School me teacher hasa kara,bata kaeke,sabal puchuke padhatehe to 4 din lagata he.aur unha sir sib padathe he aur kuchu nahi karate he

[@killerboss6011]

sir ab nach ke padhaenge kya samajhne ke liye bahot h👍👍👍

[@bharatshukla3636]

@@killerboss6011 Achha toh school me pura din physics padte ho ki sirf ek Baar?

[@user-dh6ud5rs5h]

​@@killerboss6011Hmmvo to ha😅

[@kumkumkumari8635]

Class me shebh 40minute padhai jata hai

[@VeerYadav-sj6kd]

Kon kon 2024 me class 8 me aaya h jaldi like karo

[@ZareenaKhatun-p1k]

😂😮😮😂😅😂😮🎉

[@imperialx8787]

8:29 1) Speed of light = 300000 Km /s
2) Speed of sound = 330 m/s
17:22 1) Example of luminous object = Sun , candle flame 🔥🔥
2) Example of non luminous object = Book 📚 ,pen 🖋️ , Table ,chair , house 🏠 , etc.
32:48 1) Images are formed by [regular] reflection .
41:56 1) Minimum number of mirror needed for multiple image formation are = 2

[@Jevendra199]

Speed of light =3,00,000 m/sec

[@ITKamado]

No bro it's km​@@Jevendra199

[@ITKamado]

​@@Jevendra199no bro it's km

[@uditjoshi1074]

Your smile is amazing I found this channel first time but now my class 8 is close to end and 9 to start😭😄😄🧑‍⚕️🧑‍⚕️🧑‍⚕️

[@pragyanmohapatra1487]

Only annuals left

[@Ptewfgyhj]

8:29) Speed of light = 300000 Km /s
2) Speed of sound = 330 m/s
17:22 1) Example of luminous object = Sun , candle flame
2) Example of non luminous object = Book ,pen, Table ,chair , house, etc.

[@Ang_uish]

👍

[@sanatan_dharm_speech]

❤

[@AnkitCuber-zh9rs]

😊😊😅😅..

[@MANOJKUMAR-iq9ez]

3×10⁸ m/s -speed of light

[@chaitalisarkar2832]

Speed of light-300000 km per second

[@user-ps6us9gi2b]

Legends watching this before exam and in 2024

[@user-ps6us9gi2b]

Koi to like kardo

[@Gojo.satoru1]

Hi

[@krishnarashmi3872]

Done bro

[@swatikhot-pd6lc]

yes bro majaburia hai 2024🤣😃

[@user-zt9nt2nq3o]

yes bhai

[@rashikarhade7122]

Periscope:- 32:59
Multiple image :- 37:01
Kaleidoscope:- 42:45
😊

[@vijaymishra9486]

periscope nahi regular hoga

[@PavakiClub]

Legends don’t make notes they directly learn 😎

[@triptigupta9608]

legends do not get good grades they only fail

[@abhinavtheconqueror7]

3:48 A magical light who gives definitions. LoL 😅

[@omkar_watte]

Sir you're literally Saving life of students around the country 😂😂

[@sanjaybarik8078]

Hi

[@opticnewtella]

Doctors be like: bruh 💀

[@btsforever7953]

Absolutely 😂

[@_Cyber_Beast_]

🤣🤣

[@arnamawasthi5403]

Yes😂😂😂😂😂😂

[@darkblackfox450]

Two things make this class best ist is KNOWLEDGE OF SIR🙄AND SECOND IS SMILE OF SIR😊❤❤❤

[@krishnamenanmishra8038]

Yesss

[@carryminati-4.3millionview67]

Simp 😂

[@wayofsuccess3947]

Yes

[@galaxygamerz6182]

32:48
images are formed by regular reflection.

[@AbhinavKumar-ow6in]

Luminous hoga

[@mumaintinegaming5973]

Students are never bored when they learn from physics wallah 😊😊😊😊

[@dharitrisarma2812]

Obviously bro..

[@priyalmangal7236]

I am about to sleep

[@ØM__PRINCE-VIP]

@@priyalmangal7236 ❤️❤️❤️❤️

[@imnotarnav]

YESSSSSSSSSSSSSSSSSSSSSS

[@ranusharma6687]

@@priyalmangal7236 so pls sleep

[@krishkumar4973]

Q3. Two mirrors is required for multiple image formation.

[@NidhiSingh-ru3tr]

8:37 Speed of light=299792458m/sec
8:37 Speed of sound=343m/sec

[@superiorx31]

1) Images are formed by regular reflection.
2) Two minimum number of mirrors are required for multimple image formation.

[@EYEPATCH12-mm1ib]

we need more teachers like them in our school too!!!

[@user-zt9nt2nq3o]

Light in One Shot | Physics - Class 8th | Umang | Physics Wallah

[@shreyassingh3785]

8:22 Ans 1= 3x10^8m/s
8:23 ans 2 =340m/s
17:28 Ans 3 =luminous: red hot iron
17:28 Ans 4 =non-luminous: dog
32:56 Ans 5 =regular
41:50 Ans 6 = 2

[@coolboi101]

Can ans 3 be torch too?
Just asking

[@hrishabthegamer2035]

yea bro ... torch , tubelight , headlight etc all those are examples of luminous...
@@coolboi101

[@shreyassingh3785]

@@coolboi101 yes

[@sarcasticgirll4486]

How you measure the speed of light and water ??

[@user-jn1fp7xk3r]

8:22 ans 3

[@Induswithme]

32:50 regular reflection

[@user-hj1lj3xu9x]

Exam k pehle wale attendance lagao

[@sushmasuryawanshi2870]

Mai 😂🖐️

[@sahasuhana.s.7b.307]

17:45:- ☆Example of luminous objects : TUBE LIGHT , CANDLES etc.
☆Example of non luminous objects : PLANTS , SPOON etc.

[@SeemaKumari-qf2xc]

Legends are watching this video in 21 janvaruary😂😂

[@mahiray5340]

Because exam in on 16 february😂

[@ghulammohd1331]

First spell January correctly and call yourself a legend

[@noobrush5490]

8:34 speed of light=3,00,000 m/s or 300 km/s and speed of sound=343 m/s
17:15 luminous object - star
non luminous - planets
32:40 images are formed by regular reflection
41:47 the minimum number of mirror required to form multiple image is 2

[@thathastugamer186]

Anyone from 2024 😂feb

[@TusharAgrawal-fz4rl]

2024 but March not Feb.

[@AlokSingh-kh8dx]

Physics change and chemical change padhe dijiye sir please 🥺

[@shivangiarts3144]

Like if you're also watching this video on 1.25x speed

[@Induswithme]

17:21 luminous - neutron star
Non luminous - humon body

[@Navya1-yk8gi]

8:15 Speed of light = 299,792,458 m/s
Speed of sound= 343.2 m/s
17:09
Luminous object= Sun, stars,torch, candles etc.
Non-luminous object= pen,chair,wood etc.
32:45
Regular
41:45
At least 2 mirrors are required...

[@aryanrajawat28]

Torch man made luminous object me ata h

[@one_26]

​@@aryanrajawat28Vo sirf natural luminous object nahi bata raha hai

[@harshinivt1361]

U are topr

[@yadavbrandangle]

😅

[@sahilghorelaff6222]

😮😮😮😮😮

[@bestdealsbyamit....propert762]

Images are formed by Regular Reflection [ 32:56 ]

[@ajisaarya8385]

T ka kare

[@rai24art6]

Thank you alok sir for easily clear this chapter

[@yadavsv680]

Um dj alok 🤘🤘🤣🤣😂

[@rai24art6]

@@yadavsv680 what do you mean

[@factfire7863]

Ye alakh sir nhi hai

[@oneshotgamer6427]

Easly nhi easily hota hai 🤣😂😂🤣😂

[@oneshotgamer6427]

😅😅😅🤣😂🤣🤣🤣🤣🤣😂😂😂😂

[@user-yj9zo4rl7x]

Mera Aaj exam h...aur video abhi deakh rhi hu.😢😂 Legends...hit a lyk.😜

[@reenaprasad3743]

Speed of Light - 3 x 10^8m/s
Speed of Sound - 343m/s.

[@edit_with_KANISHK]

👍

[@A_M_gamer9646]

wrong answer speed of light is 300000 km/s

[@reenaprasad3743]

@@A_M_gamer9646 3*10^8 m/s = 300000 km/s.

[@sumankaswan7743]

Kese hua muje bhi samjao koi 😢

[@vandanak5918]

km nhi hota m hota hai
@@reenaprasad3743

[@tulshianand4613]

42:31 there are two parallel mirrors required for multiple image formation

[@ChessCheater-is2we]

Not multiple but infinite

[@Shadoww_game]

My phone luminous and book is non luminous I have big braaiiinn 😂😂

[@Tabletenniswithpranay]

Sir bada acche se samaj aa raha he or notes itna easily mil taha he qya baat kare aab alok sir ki

[@Colouring_palette_]

41:48 we need minimum two mirror to form multiple no. Of image

[@KMRGAMING3333]

Kon kon 2024 March mai deakh raha hai😅😅😅😅

[@sabashabeersaba1579]

Mai April mai dekh rahi hu 😂

[@dipumishra5711]

Thank you for this much explanation
Eg of luminous object is star
Non luminous object is eraser
Sir can i give human in eg of non luminous object?.

[@santohdevi8223]

Hi

[@sky-pz8xn]

Well, for your information , Stars are non luminous object because they don't emit light , they don't have their own light , the sun rays reflect it in our eyes .
And yes we can give humans as an example of non luminous object

[@aryanlenka3780]

Heat produce by matchstick luminious object

[@Youtubers_Clips]

Tomorrow is my final exams...and IM studying ryt now

[@mlsaini6658]

Sir 2 minimum number of mirrors required for multiple image formation

[@r.rcreation3561]

Infinity

[@aryarai2214]

You are really great teacher of physics sir 👏 👍

[@shubhamtomar5682]

Apcosh

[@mythicgreninja412]

17:28 example of luminous object- Bulb
Example of non luminous object- Human

[@sumanbala1663]

8:22 Speed of light-3×10^8
Speed of sound in air-343m/s
Speed of sound in liquid-1480m/s

[@parth6013]

O baba Adam ke Jamane ke Albert einstein 😂😂😂

[@sumanbala1663]

@@parth6013 😅😅

[@sumanbala1663]

@@NOORUSMANI281 ja na mulle

[@sumanbala1663]

@bhaktibhajan2050 bro it is b/w 1480 to 1485m/s

[@Amanbhai191]

google se search maar ke aya hai bhai😂

[@dimpalsingh7094]

Speed of light is 3×10 ^8❤ luminous like build and non luminous pen book door etc. Images are formed by regular reflection sir❤

[@dimpalsingh7094]

Number minimum is 2

[@user-mp1fp6tf1n]

Hello

[@Disco_world]

30:38 sir ek reflected Ray chut gya hai

[@vikramkumar-nu9oq]

Sir apka lecture mujhe bahut pasand h

[@alone__gamer.in.]

42:14 two

[@amy1350]

1. Speed of light - 3X10⁸ m/s
Speed of sound - 340m/s
2. Example of luminous object is -FIREFLY
Example of non luminous object is -WALL
3. Images are formed in regular reflection.
4. Minimum number of mirrors needed for multiple images -2

[@deadshotgaming6693]

8:08 yes sir
8:24
Speed of light- 3×10⁸m/s
Speed of sound- 343m/s
14:00 ans is light
light makes the object visible.
42:24
ans 2

[@rgprime2917]

yes you are right

[@vwrohitrai8850]

Speed of light in air - 3×10®m/s

[@kavitakushwaha6339]

Speed of light - 300000 m/ second
Speed of sound - 343 m/s

[@user-uc4qv5zn8w]

17:41 luminous tubelight Non luminous book

[@bhavyadagur9614]

Example of luminous are sun , fire 🔥, stars etc
Non luminous are table , chairs , pen , pencil , etc

[@ashavlogs4512]

sun is a star only

[@abhisheknishad2148]

I 8t

[@abhisheknishad2148]

@@ashavlogs4512 hey

[@KarandeepSingh-oq5iv]

Yes you are right

[@muto2610]

@@petlove5738 they are luminous

[@gagankumarrahangdale7281]

Kash ese best brilliant teacher mere school me hote teachers should be like u the technique of explanation is really awesome 👍😎

[@resonated-game]

8:37
Speed of light: 30,00,00,000 m/s
Speed of sound: 343 m/s (Dry air, 20ºC)
17:20
Examples of luminous objects: Fire, Stars.
Examples of non-luminous objects: Key, Mutton.
32:47
Images are formed by regular reflection.
41:49
The minimum number of mirrors required for multiple image formation is two (2).

[@Catalystlofisong]

Speed of sound solid me 1540 m/s hota hai

[@muskanshaw5983]

Tube light is a luminous object

[@aumershah6586]

Speed of light is 2997884

[@ayushkumargupta5660]

17:16 Luminous object - Sun and Non-Luminous object is Earth

[@faiqaanisa9639]

Yrr this teacher mind blowing ❤️♥️🥰

[@AbhishekSharma-kw9js]

Yes yaar

[@Its_shuail_nawaz]

Really yarr❤

[@Ang_uish]

O

[@SereneWinterSled-hf3qi]

Answer:To obtain multiple images, two or more mirrors are required. 41:44

[@Artist_Onima]

Q.What is a periscope ?
Ans =It is a cylindrical pipe in which two plane mirrors are placed one at the bottom and the the other one at the top and when the object at the top reflects light and then falls on the 1st mirror and that reflection then again falls and meet the 2nd mirror at the bottom of the cylindrical pipe then the reflection of light of that object and then to our eyes , then only we can see that object which was not visible directly but through this we can see that object of cylindrical pipe with 2 plane mirrors one at the top and the other one at the bottom it makes a scope that scope is known as a periscope .

[@ManojKumar-th8yn]

Right

[@user-xr3bb7fj6h]

😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂

[@Myvlog00782]

😢😅

[@pratishtha_009]

Itna bada😅

[@sonysingh3661]

Half yearly exam se pehle kon dekh raha hai august 2024

[@ishaanpati5160]

me

[@Ashu_MM]

School me kash ase teachers hote ❤

[@frosterplayz5944]

no wa i dont want this teacher
i only want ritik sir.
Ritik sir is the best than this sir
ok

[@ranjana1devi749]

17:46 Ans 1= speed of light=299792458m/s
17:46 ans 2 = speed of sound=343m/s
17:46 Ans 3 Example of luminous object is star
17:46 Ans 4 Example of non- luminous object is Book
42:09 Ans 5 Regular reflection
42:09 Ans 6 Two

[@Sakshi___2504]

17:48 luminous=fire 🔥
Non luminous=book 📚

[@Truthneeded]

Maje sure being teacher is nice but teacher as a teacher is a pride in own self .... Respect for this man 🙏🙏🙏

[@dhruvkhande7291]

Speed of light is 300000 km/second
17:21 = Luminous object= sun,star,bulb.
Non Luminous object= moon, pen,chair
33:00 Regular reflections
41:55= 2 mirror

[@wayofsuccess3947]

Nice

[@hemlatarao4095]

Good beta nice

[@anshff5741]

@@priya-ju8tj hlw

[@aigerakabane1312]

Correct👍

[@medhathorbole2730]

Moon is luminous bro🙏🏻

[@pks0075]

Literally he is the world's best teacher ❤🎉

[@arnavbehera6654]

32:52 Images are formed by (regular) reflection

[@janmejaykataraji9080]

Thanks sir to explain this chapter we can understand easily thanks for pw launched this batch in free of cost

[@rachityadav783]

17.45 luminous object =led bulb and non luminous object=radium

[@rudramishra9281]

People who love light yagami🗿

[@journeywithlearningbyprith7155]

32:47 Ans:-Regular Reflection

[@vasudhadwivedi]

32:46 Images are formed by Regular Reflection
42:05 Atleast 2

[@Mrssoni21]

@@amboygamer8505 hi

[@mr__mayank6710]

Hi

[@vineetapandey7977]

Sound have different speed in different medium
Speed in air =330m/s
Speed in water=1500m/s
Speed in Steel=6000m/s

[@StumbleNAG15k]

speed of sound is depended on that in which medium it is travelling 5000 in solid 1500 in liquid 340 in gas
speed of light about 3 lakh km/s
luminous object = stars
non luminous object = human
regular reflection as image fall on plane surface(mirrrors)
2 mirrors

[@THESONIGUY]

🙅🙅🙅🙅🙅🙅🙅 but corrrect

[@mythicgreninja412]

32:53 Images are formed by regular reflection

[@VIP_ADARSH_GAMING]

Luminous object- sks, woodpecker,AWM, Shotgun 🤣🤣

[@sirskyler3257]

Bhai non-luminous bhi bta de ab

[@switchgamer6054]

Sir light ray reflected again by periscope also used for see object image so how 🤔 can we see object can object images also reflected please solve my dought

[@studywithmilubilu460]

1) speed of light - 3×10(8)m/s
2) luminous - Star, Non luminous- chair
3) Regular mirror ( Plane mirror)
4) 4 mirrors
Thankyou ☺️

[@noname_xD_]

1st ms-¹ Ya K/h dalu..

[@noname_xD_]

@@studywithmilubilu460 Si unit..🙂

[@PushpendraKumar-su7vm]

Yeah

[@PushpendraKumar-su7vm]

And speed of sound= 330m/s

[@m.farhan1750]

Spelling of plane is wrong

[@pathikgupta6719]

8:36 speed of light :- 300 million m per second
Speed of sound :- varies in solid liquid and gases
In solids :- 4000 m per second
In liquid :- 1500 m/s
In gases :- 322m/s

[@kanaklatakumari5353]

LUMINOUS ☀️☀️⭐⭐🌩🌩🔥🔥

[@swaritbhai]

sir You the best teacher from whom I've learnt till now in my whole life😄😄❤❤

[@palak8008]

32:58 Images are formed by regular reflection......

[@Jevendra199]

8:37 Seed of light=3,00,000 m/sec
Speed of sound =343 m/sec
17:28 Luminous object=LED,Torch,etc.
Non-Luminous object=Wall,Book,etc.
32:52 Regular Reflection

[@jogendrasingh1531]

Ya mera bhi same hai

[@jogendrasingh1531]

😢😂

[@user-ho4uf1lp8k]

Luminous= sun , fire etc. Non-luminous= pen, pencil,book etc. ❤

[@usmanganishah6451]

Thank you sir, I understand very well what you read.

[@SereneWinterSled-hf3qi]

Answer: Regular reflection ✓

[@jp_bhati_ytjodhpurplayer9852]

Example of Luminous object - electric bulb , candle , etc.
Example of non luminous object - pillow , pen , etc.

[@anitamunde3021]

Luminous object -bulb
Non luminous object-mirror ,pen

[@sudarshankumar7121]

Galat hai

[@Shandilyakriti675]

Example of luminous object = jugnu
Example of non luminous object = wood

[@riyataank8498]

32:25 IMAGES ARE FORMED BY REGULAR REFLECTION
41:54 MINIMUM 2 MIRORS ARE REQUIRED TO FORM A MULTIPLE IMAGES

[@anjanaguha44]

Speed of light=3×10^8m/s
Speed of sound = 343m/s
Luminous object - 🔥 fly
Non-luminous object - ✏️ , 📖

[@simranjot7157]

Speed of light - 3 × 10^8 m/s
Speed of sound - 343 m/s

[@Fundaazgamer]

good

[@FRAKandanime74798]

@@Fundaazgamer which school

[@opticnewtella]

@@FRAKandanime74798 black death scool

[@FRAKandanime74798]

@@opticnewtella 🥱

[@mineeditz7542]

@@opticnewtella 🌚

[@parmitamahato8986]

12:02 tree bilkul bhi nhi lag rha ha 😂

[@HacRides]

Bilkul sahi

[@parmodgoswami4650]

17:17 An Example of a luminous object is stars
An example of the Non luminous object is notebook

[@Flick077]

8:23 - Speed of Light-300,000,000 m/sec
Speed of Sound - 343 m/sec
17:25 - Eg. of luminous objects are bulb, fire, stars and etc.
Eg. of non-luminous objects are pen, book, chair and etc.
32:51 - Images are formed by ___regular___ reflection.
41:58 - " Two " mirrors are minimum required for multiple image formation.

[@SMDJPIANO]

Anyone watching it for Annual examination.😅

[@PavakiClub]

😂

[@Ansh-d8]

Tomorrow is my science exam

[@SMDJPIANO]

@@Ansh-d8 All the best 👍🏻

[@SMDJPIANO]

Mine maths

[@Ansh-d8]

Which board

[@SonaliOfficialChess]

The speed of light = 299,792,458 meters / second
the speed of sound = 343 meters / second.
example of luminous object is electric bulb and example of non luminous is chair
Images are formed by a Reflected rays

[@sanjayboss2278]

❤

[@sanjayboss2278]

😊