How to get 30 Marks in Physics Practical ? || Physics Viva important Questions || cbse 2020
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- Опубліковано 8 лют 2025
- #Class12PhysicsPractical #atc #PhyaicsVivaQuestions
MOST IMPORTANT PHYSICS VIVA QUESTIONS !
most general questions usually asked during the viva of physics class 12th final practical ?
1) Why are the resistance used in a resistance box is like 1,2,2,5,10,20,20,50,100,200,200,500,1000,2000,5000 etc?
2) Why wire is double folded in resistance box?
3) Name the physical quantities to be kept constant for Ohm's law to be true?
4) State the principle of a potentiometer?
5) How can we increase the sensitivity of a potentiometer?
6) Define figure of merit of a galvanometer? Which has more resistance, a galvanometer or a millimeter?
7) How does an LED emit light?
8) What is the difference between an ordinary diode and an LED?
9) Define principle axis of a convex lens?
10) What happens to the focal length of a concave mirror if it is immersed in water?
11) What are the factors affecting the internal resistance of a cell?
12) What are the differences between primary and secondary cell?
13) Why can't we use a dry cell for starting a car?
14) Define spherical aberration and draw diagram to show it in case of a concave mirror?
15) What is parallax? How is it removed?
16) Define dispersion of light, give its cause?
17) Show dispersion of white light into seven colors?
18) Define lateral displacements and give the factor on which it depends?
19) Define critical angle and deduce the relstion between refractive index and critical angle?
20) Explain U-V graph in case of image formation in a convex lens?
21) Distinguish between primary and secondary cell, give two differences?
22) How does rheostat act as a variable resistor, potential divider? Illustrate with a diagram?
23) What is a non inductive coil? Give one special feature of non inductive cool?
24) Draw a neat and label diagram of Leclanche cell?
25) Write chemical equation in Daniel cell?
26) Why is the emf of auxiliary battery greater than the emf to be measured?
27) Why are standard resistances made up of constantan and Manganin?
28) Define figure of merit and give its SI unit?
In similar pattern you can have an idea about the rest of Physics chapters. The key to your better performance is a fair understanding of the subject. Please prepare yourself in view of the following guidelines:
MUST WATCH VIDEOS ABOUT PHYSICS PRACTICALS LIVE FROM SCHOOL PHYSICS LAB :
#Class11PhysicsPractical #11physicsViva #ImportantVivaQuestions
11Class में ऐसे होता है Physics Practical | File checking | Allotment of Practical | Physics Viva
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चाय पे फिजिक्स चर्चा |Post Physics Practical Real Discussion by Class 12 Students |Physics Practical
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How to get 30 Marks in Physics Practical ? || Physics Viva important Questions || cbse 2020-2021
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DOWNLOAD CBSE SYLLABUS FOR CLASSES 9 , CLASS 10. CLASS 11 , CLASS 12
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The frequently asked questions during viva are mostly related to methodology and principle.
Read thoroughly the complete theory behind the experiment.
Revise your practical notes.
Graphs are important part of Physics practical exams, try to a have there fair understanding.
Experiments have been developed to prove the principles, so remember the main principle behind performing any particular experiment.
Visualize the diagram of the experiment and draw it roughly.
In case of any doubt, consult with the teacher or lab attendant.
Don't be nervous at the time of experiment and write the important steps before starting the practical. Above all, it is your self belief that plays an important role. Develop "yes I can do it" attitude. All the best. May God help you.
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its a privilege to get an external like him in your boards practical he has maintained a chill atmosphere around students and is really friendly.
Practical unka ho Raha hai aur yaha nervous Mai ho Raha hu🤣🤣
@@Rahul-pro anywhere
Jai Kim Jong un 😂😂😀😀
Tu kyu dar raha hai sale tu toh korea ka rakhshas hai🤣🤣
Mai bhi 😂
me too
I wish every student will score 95+ percent in board...👍
❤
❤❤
The boy is undoubtly a backbencher and regret to become their roll no 1 😂😂
Yup
i wish if i had a teacher like you!!!
our teachers scold us very much if we fail to answer...
In practical never Argue with external , that's it....
You will get good marks
Okay bro thanks
Are u shure ?
@@justmemories33bina practical ke aapko marks bhi nhi denge wo. You would probably fail. Plz kuch v banake check karwa lo practical copy(school teacher se thoda baat kar Lena)
@@ranvirsharma9739bhai ye viva mein jo question puch rahe h vi syallabus mein se hu puch rhe h ya practical mein se hi puch rhe h ?????
@@justmemories33 Bhai mere chemistry practical kaa bohot late check karwaya hein toh sir nein sirf chemistry practical ke last page bass tick aur signature karke chor diye, beech beech mein tick nehin Diya. Sabh likha hua hein, kuch problem hoga kya?
These students are so lucky as you are taking the interview ☺️
I wish aap hi aa jaate hamare school meim😀😃
Best external examiner...so understanding and not asking hard qs i hope i will also get such a teacher in my viva.
appka viva kisa hua tha bata sakte hai kya pls
Wrong answer h -what is a diode?
It's correct answer is-
A diode is an electrical component that allows the flow of current in only one direction
Yeah it's the Rectifier which converts AC into DC.
Only if it's forward bias
In reverse bias there is no conduction so this answer isn't exactly right
Esay question too sir ne pucha h sabse ❤❤😊
When u realise the questions are actually very easy 🥲🥲🥲🥲💀
yes bro
I still remember my 12th biology practical , the external examiner asked me --->> "Tumna Biology Ladkiyoon ka chaakar ma leya ha Kya"
Hahaha......😀😀😀
😂😂
@@PhysicsHeadQuarters Sir mai abhi class 10th mai hu toh mere bhi aise hi practical honge kya
mai 4 may ko board dunga
@@pranaysaini2639 nahi bhai
@@pranaysaini2639 nhi bro
students : noida
teacher : no idea
👇🏻😂
@Nobita 😬😁
😁😁😁😁😁
Hnn bhi🤣🤣🤣🤣
Noida wale ser hu aa hai
@@sheikhahrar2577 😁
What is the principal of meter bridge? Proportional to length
What is diode? Covert ac to dc it is made up of semiconductor
What is pascal law? At same height, same pressure in fluid
What a transformer does ? It can decrease or increase the output voltage ex:- stabilizer
What is the name of 2nd law of kichross law? Loop law
What is resistance
What is internal resistance
What is diffusion current
What is semiconductor! .
Zener diode worked on reversed biased
What is dipole moment
Realising that I don't know any answer of any question and tomorrow is my practical 😂😂
Bhai kya hua practical me tera bata
Same
@PrimeYash76 bhai tumhra kya hua muje bhi bata dena
@@singhshab2555 ok Bhai Bata Dunga
He was so understanding and very friendly agr aise teacher mere practical exam m aaye to meri saari nervousness khtm ho jaye 😌 hey bhagwan bless me…..🤞🏻❤️
i wish my examiner ask easy questions like that...you are really supportive sir.
Same here bro I wish it can be true
24 ko hai mera
@@ranvijaysingh9580 kl h mera
@@piyushdubey1602 bhai kaisa hua?
@@iitdcse2024 bhai viva jyada hard hota nhi h kuch definition aur optics ke formulas , concepts jyada puchte Hain
Thank you for making us experience the practicals before the exam itself
thanks a lot
He is scaring us..don't be thnkuf..m hpy I didn't watch dis vdo before my practical...
@@Nigaranjum737 very true
@@Nigaranjum737 daroge to ded ho 🤣
@@Nigaranjum737 acha
0:48 that boy asking for his practical file & his freind threw it 😂😂😂
Yes...It happens
Thanks for the video😇
@@devsharma9540 वेलकम
Boys😂😂
@@PhysicsHeadQuarters sir in manners ka bhi impression pdta h ky external examinor pr??
Share karo. .sir itne bimar hai fir bhi itna kar rahe hai hamare. Liye...hatts off...Yar inke to million subscribers hone chahiye...par lagta hai hum sir ka fayda utha rahe hai..aur unhe itna Support nahi kar rahe jitna karna chahiye🔥
5:06 name of boy - paras
name on file - aryan raj
greattt
Nice observation
20:54 she kept the note book on her lap and after every question looks down to the notebook, later on the boy sitting on her right notices and giggles on it
Yaa right😁
🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣😂🤣🤣🤣🤣
I also noticed that😂😂
Yaa cheating
Ldkiya cheating kr leti h yar mere class ka bhi yhi haal h
This give me more knowledge about practical...
Bhai knowledge bahut mil gayi
DHARMENDRA RAJPOOT yes bonne 👶🏼
thanks a lot
@Anshul verma Haan bhai 😀 sahi pakde 👍🏻
Yes
Indian education ko aise teacher mile to student me descipline aaye
Roll no. 1 Ayush literally me 🙂
us bhai us ;) 😢
Us brother 🙁
😢
😂
Last roll number YASH. Literally me 🙂
Principle of meter bridge
What is a diode
What is limiting friction
What is Pascal law
What a transformer does
ha bs yhi poocha jayega😆😅
@@piyushsingh1290 humara toh kl hi hai 😶 physics ka itna darr lag raha hai
@@tripathi_ji0249 ours too 😂
@@lilacclouds37 hm.
@@tripathi_ji0249 kuch nhi padha me bhi
You're such a humble teacher..
Hlo
Hii
Behan pass ho jaye
Tussi to beautiful lagte si
Read if you are free : last year in my physics viva , i could see all my friends were completely blank , in my row no one could answer any qn ( AC , Refractive index) i was taking the full advantage of it and I asked the interviewer repeatedly that whether I can I answer their questions , he gave me chances after every question and I just explained everything. Next when my turn came , teacher said that " your interview is almost completed " . I got relaxed and chilled out with rest of the questions.
Now I got 30/30 in all my practicals.
Just a tip for you, revise the complete syllabus multiple times so that the interview can be your best day of your life.
Dont memorize everything, try to explaim in lucid manner.
Thanks for tips luv u bro...😊😊😎❤❤
wah ye koi tips bhi nhi h common sense ki baat h
Same I did in my chemistry practical 😅coz my partners were blanked so I took advantage
U r very chalak bro😂
06:05 thats pascal paradox (application of pascal law) not the actual defination of pascal law.
Nevertheless , this mock viva will definitely help students.
3 saal ho gye college pass out ho gya lakin ye deakhke panic hogya 😂 siraf roll number 1 sunke
17:15 that Backbencher kid from your classroom 😂
😂
YES ! AGREE ANURAG SIR IS A GRAET HUMAN BEING AS WELL AS A GREAT TEACHER...
THANKS DEAR !
The maximum value of the static friction in which the body just start sliding over the surface of oter object is known as limiting force of friction
Thank you sir ❤️this actually released up my whole stress regarding the practical session 😭.... God bless you sir!
Plz help, maine practicle file nhi banai hai ip ki or kisi bhi subject ki kyuki meri tabiyat bahoot jyada kharab hai, even practicals bhi nhi dene ja paunga to kya mujhe practicals mai 29/30 mil sakte hai(private school se hu)?
14:24
lens formula :-
1/f = (1/v)-(1/u)
anpadh log hai, kuch nhi aata gawaro ko.
Google karne ka time nhi milta hai waha 😂
@@Aanyaj It's correct. Bruh. Even a tenth standard student will say this.
@@Aanyaj women of mirror formula me 1/v + 1/u hota hai
@@An_ony_mous women ☕
Sir agar aapke jaise teacher ho toh practical mein nervous hone ki baat hi ni h :)
This is a perfect prototype of every college practical.
It's a practice for university practicals. It will be more challenging than this.
Diode is a device which allows only 1 way flow of current and rectifier converts AC to DC.
Isn't the answers wrong?
Also isn't metre bridge is based on the principle of wheatstone bridge and potentiometer meter on the principle that in a wire of uniform cross section area the pd across it's two ends is directly proportional to it's length?
Vahi to bhai meterbridge wheatstone par hai
Ha bhai tm shi bol rhe ho
Yes..u r correct bro 👍
Acha hua edit krne s phle vala comment ni prha maine. ...🤣
@@cgjjkk4913 bro in that comment i didn't mentioned the metrebridge part. 🙂
And what's the point of laughing?
tomorrow is my practical nd my physics teacher has advised me to prepare one topic perfectly..bcz at last examiner will say that jo topic aache s aata h wo bta do😝😝😝😂
Really?😂
Even I will do the same , cause no much time left
@@healthybrains9491 yes..done now...examiner was frndly nd cool..😂
@@nehajoshi2959 topic means a chapter or something?Please help
@@tunkruwangru8819 topic means a particular topic like metre bridge or anything else. simply a portion of chapter
@@nehajoshi2959 metre bridge?It isn't in class 12 right?
Ye examiner bahut ache h kitna frank h baccho se🥰🥰🥰
मेरे स्कूल मे अभी practical हुआ 12 कक्षा का ऐसा कुछ भी नही हुआ
School वालो को जिस स्टूडेंट को नम्बर देना होता है वो अपने अनुसार देते है इन practical exam per निर्भर नही करता।
Meter bridge works on principle of wheatstone bridge
Correct hai bro
10:50 agr aisa answer me Apne school me deta to pta nhi kitna kuch Sunne ko milta Aur practical ke marks kat jate vo alag
Damn mere 12 boards ke practical hone vaale hai or mujhe yeh video dekhte hue hi nervousness mein dimag blank hona hai.😅😅.. Aisa hi rha to vo examiner to meri shakal dekh kar hi mujhe kisi depression ka shikaar samjhega... 🙂🙂🙂
14:30 even i knew though i am in 10......so after seeing this i can confirm that in practical your concept matters a lot and the way Sir asked the questions were directly related to their practical file .....btw gr8 efforts Sir....
haah ahaha ,,,,,,,,,,,beta itna easy question nhi puchte.........remember that
Jab 12 me aagya tab pata chal jaayega
Now we are in 12th 😂
Bhramit jeevan jee rhe ho abhi , aao 12th mein toh pata chalega
Practical unka ho raha h and heart beat 💓💗 meri increase ho gai h
What is shunt? What is the dimensional formula of potential difference? What is dioptre? What is impedance? 🙃
Shunt is a low resistance connected in parallel to galvanometer to convert galvanometer into ammeter
DIOPTRE IS THE SI UNIT OF POWER
Impedance is the net resistance offered by any LCR circuit.
Z = (R² + |Xc - Xl|² )^½
V=w/Q so it comes out to be m l^2 t^-3 A-1
M L² T-³ A -¹
(- ) is the minus sign in power
This is the dimensional formula of potential difference
24:02 the back boy is saluting😂😂
🤣
😂😂
if diode converts ac current to dc then what the heck rectifier do.💀
Mera kal h Physics ka practical.... actually sir Jo apnr question puche h vo easy or ache h😍😍😍
Sir bss app jaisa examiner aa jaye practical me❤
thanks a lot dear students !
Bhai Anurag Tyagi is most supportive teacher on UA-cam😀love u sir..❤️❤️❤️
two min silence for them
😂
Ha ha ha ha
😂😂😂😂
student Whose Roll no 1 with backbencher 🤡🙌🏼
Koi impression ni pdta file ka..file kisi ki ni dekhi neeche phenkdi sign dekhkr nhi to side m rkhwadi chahe kisi n kitni b sajai ho..or sirf viva p dhyn dis that too was super easy they asked for one chapter we have prepared well
Really practical examinar are this much polite😃🤔🤔🤔
I think mujhe bhi heart mil jayega..........
By the way, great video......
😍😍😍😍😍😍
I could not see a better examiner than this
Principal of metter bridge is balanced waight stone bridge
I don’t know if you remember me but you’re the same teacher (external examiner) who took my viva voce yesterday!❤🎉
Kirchoff voltage law /loop law
Yes
Pls share this video
Muze bhi ye ques pucha tha
@@shwetazade1493 ohh...great
Sir u r so humble and boosting the conference of students.. But our viva teacher was sooo cruel their target was to get wrong ans by student
Kal practical exam hai aur ye video ne bohot help kiya
Practical ho gya kya?? Kya questions puche sir ne?
@@jai_shri_radhesyam aim of the experiment pucha tha and uske bad kya pucha tha vul gaya🥲
@@ayushkonch2799 experiment bhi karwaya tha kya? Ya sirf questions puche?pls help 🙏😓
Thanks a lot sir I really need your blessings for my tommorow practical
Mai abhi just viva de kr aa rha hu 12th ka...and I want to tell you all that same aisa hi hota hai guys...🙏
Thanks bhai
😅👍
@Mpppwpw it depends on your luck...just ek vaari video dekh loge to ho jayega
@Mpppwpw jo practical tmhare school me teacher ne krwaya hoga whi...(from the you tube channel TOP COACHING with 77.7k subscribers)
Sir I'm from Commerce field
I'm doing B. Com. Right Now
But I love to see your videos
For Knowledge
U r asking questions very politely thx sir for the help 🙏
I think rectifier is a device which convert AC to DC 🥲
Yes
U think right 🤣🤣
But rectifier are made using diodes
Rectifier diode bhi hote hai
Yes
Sir ap bohot ache ho aap jaisa teacher sabko miley❤
Thanks
small mistake Sir at 19:00 the answer she gave to what is a diode is not the correct answer because a rectifier only converts ac to dc with the help of a transformer but a diode helps a rectifier to convert ac to dc and allows unilateral passage of current through the circuit otherwise all the answers were very nice
THANKS
Ur voice matches our physics teacher sir 😅bw big respect to you 🙂
Sir ek question hai hamra will u answer?
@@tarunjoshi1098 nhi...😂😂😂
Darne ki koi jarurat nhi h. Aisa nhi hota practical or file ko aap simple rakhoge to bahut accha kyuki wo sirf itna dekte h ki file checked h ya nhi, koi calculation diagram obaervation table kuch nhi dekhte kyuki itna observe koi nhi karta, or viva m bahut hi simple question hote h bahut simple, darne ki koi jarurat nhi hoti hai. Ye anurag sir to aise hi dara rhe h
Right
@@yashraman1645 yes
@@sharadsoni6938 experiment bhi krna padta h kya?ya sirf questions hi puchte h?
Bhai class 12th ke viva mein class 11th se bhi puchte hai kya??😢😢😢😢
I thought Pascal's law was pressure applied to a stationary fluid in a closed container at one point is equally distributed to all other points and to the walls of the container 🤔
yeah correct,
I completed that chapter. I'm in 11th. 😅
Exactly
I had that in class 9😂
Itna easy dikha rha hai idr viva but humlog ka viva bohot high level pe hua tha. It was like a chain questions. You answer one and the next question is based on your answer itself. If you are not able to answer, then game over. Practical file se questions puche, diagrams explain krne diye, diagrams roughly banake dikhane diye. Not as easy as it is shown in this video. Our external was 🫡💯
@@saimabegum9549 experiment bhi krna pda tha Kiya?
Sir mera viva to bhot accha gya saare que ke ans correctly diye
Wow...great....
Pascal law= two places experience same pressure in a system
Limiting friction= maximum no of friction that help in not moving the object
Class 9 hu Abhi 10 me jaunga sahi bola answer toh like do
Waah
@@PhysicsHeadQuarters thanks sir phele bar itne bare ytber or sir ne mere answer Ko reply diya😭
@@dontwastetimeyouarelosingr8172 love you....And God bless you
@@PhysicsHeadQuarters arreh sir one year hogya main 10 th me Agya but ab phele ki tarah Tej nhi rha sayad school coaching nhi jarhe hain isliye inta concentration nhi padh pate
Such a friendly teacher I want😢😢
Wow yrr itne pyare viva k teacher ho to answer comfirtly de payenge hm log...mere v viva teacher apke trh ho sir😆
thanks
@Huzaifa☄️ hello sis
In class 12th practical will the external ask question from class 11th chapter
May be because there are the basic of class 12
This is more like a horror movie...giving me chills 🙂💔
Kiska kiska kal viva hai 😂😂
Khaash aisy teacher mujhe laggy hoty to mere compartment nahi aati😭😭😭😭
18:09 listen carefully 😂😂🤣🤣🤣 I'm 12 classs ohhh bhaiii😂😭
🤣
21:18 aap kch batana chah re the..
Aaaaaaa...
Kia tha😆😂🤣😂🤞✌️🤙🙏👍🔥
Sir focal length of lens is equal to the distance between principal focus and the optical center(not pole🙂){video me pole bola tha jo ki mirror me hota hai}
Exactly bro i was correcting the same thing
@@rayelreang3529 ✌️
What is capillarity
It is optical center in case of lens and pole in case of mirror
Hamare yaha to paise deke practical ho jate h 😂🤣🤣🤣🥰🥳
😂😂😂
My examiner had asked some 5 questions and I gave 3 correct and 2 wrong answers at that time. Believe me, as soon as the examiner left, I suddenly recalled the correct answer of 1 of the questions which I had answered wrong.
U know, this thing hurts a lot than not being able to answer a question...😥😥😔
Did you get good marks??
@@Midori-n4d lab manual hi banana hota na bs?? ki koi file alag se bhi plz tell
@@Midori-n4d aur alg se banana rhta to kya krna rhta usme
@Shinaya Mendes 28 :(
@@Midori-n4d kind of....got 28
Ist ques ka answer
Meter bridge is a practical form and based on wheatstone bridge...
limitng friction pascals law ye sab to 11th ka hai na>?
1:45 sir said ye galat quesetion hai
Mera to kal practical ha bas dekhne aaya tha ki kaise hota ha practical 😂
Kaisa gaya? Aur kitne marks mile?
Meterbridge wheatstone brigde pr based h 😂
Yes You are right
Balanced wheatstone bridge
Null Deflection Method
@@krishnakantmishra9168 potentiometer
Kash humare kal ke external teacher v aapke jaise ho ❣️
18:50 meter bridge works on the principle of wheatstone bridge
I really wish to get a external teacher like u sir.....
Thanks for Making this video Bczz ..After 1 month in February my viva 🎅🥶🥶👍👍💜💜🎄🎄🌲🌲⛄⛄⛄⛄⛄⛄
Me to ☹️
12 ke practical me 11 ka kyo puch rahe hai??
Arey ye sab hamara iss saal delete ho chuka hein
Ye 4 saal phele ka hein
Tujhe Limiting friction tak malum nhii 😂😂
Mere pratical exam hogay or Mujhe 30 marks b mil gay hain 😘Alhumdulilah ❤❤❤
Sir will there questions related to 11th class also be asked ??? Reply sir ASAP please