Most Commonly Asked 4 Questions In Physics Practical (VIVA) | Class 12 Board Exam 2021 | Sachin Sir

Hi! I’m Sachin Upadhyay Sir. In this video, you will find the session on Most Commonly Asked 4 Questions In Physics Practical (VIVA) | Class 12 Board Exam 2021 Preparation | how to prepare for physics practical exam class 12 | Online Classes for Physics | Sprint Reloaded 2021 and I will be sharing my experiences here with you regarding this. Today's " 12th Online Class " is exactly about Most Commonly Asked 4 Questions In Physics Practical (VIVA). If you want to score high in the Class 12 Board Exam, then this session will help you to get more marks. So watch the complete video and let's get a better understanding of the topic.

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[mitulcharak]

Legends are watching one day before practical exam😂👍
Edit : I am so famous now ; )

[ritiksinha..]

My practical questions
1. Si unit of conductivity.
2. Use of krichoffs law
3. Principle of krichoffs law
4. Function of switch
5. Explain snells law.

Scored 30😀.

[harshitsingh]

Kitni hasi ki baat hai na ki sir ke bataye gye question se zyada humne comments me bataye gye questions logical lag rhe hai😂

[akritihansa]

I was asked the following:
1. What is least count?
2. What is the least count of given ammeter?
3. What is the principle of metre bridge?
4. State Kirchoff's second law.
5. What is a wheatstone bridge and it's principle?
6. What is the unit of resistance?
7. Define 1 ohm.
8. What is the difference between rheostat and resistance box?
9. Identify and bring a rheostat. What is the middle piece of it?
10. How does resistance depend on length of the wire?

The examiner was calm and was asking more questions to those who answered correctly. Those who couldn't answer even 1-2 questions were sent back.
All the best!

[User]

My viva questions: 1) what is least count 2) what is refractive index 3)In the practical for finding out refractive index of liquid why do we use plane mirror

[minutesagosecondago]

Questions asked in my viva
1) on which principle is metre bridge based?
2) what will happen to focal length if we keep a convex lens in water and why?
3) lens maker formula
4)which device has maximum resistance among galvanometer, voltmeter, ammeter
5)when will galvanometer behave as voltmeter
6) what is difference in light when it emerges from prism and glass slab ..why dispersion occurs only in prism
Best of luck 👍
Examiner was khadoos*

[justvibealone]

Me:I'm here to collect the questions from comment section 😃😃

[HitechAdvice]

My physics practical questions:-

1. What is p-n junction?
2. How is p-n junction formed?
3. frequency of AC mains - formula & value.
4. Difference between emf & potential difference?

[projectease]

1 year passed But Legend still watching one day before practical exam.

[infotainmentwithjanvi]

Had my viva today
Questions my examiner asked me:
Chapter you have prepared:CURRENT ELECTRICITY
1)What is drift velocity?
2)What is emf?
3)What is potential difference?
4)Relation between drift velocity and torque(Relaxation time)?
😊That's it....so glad😁it was easy...

[snigdhabharadwaj]

Okayyy hello guys ..these are my questions...
What is least count ?
Kirchoff's law
Difference between focal length and focus ??
Source of X rays ???
How is glass slab different from prism
Formula of the prism
To draw forward bias and reverse biased
What is heat waves
Benefits of gamma rays
What are p-n junction
What is depletion layerr ???
So these are the questions external asked me ... ..good luck everyone

[rupasharma]

My practical viva questions. 1.what is knee voltage and Breakdown voltage. 2.depletion layer and potential Barrier

[starb]

My teacher told me to revise all the principles of the experiments.. And for potentiometer, metre their construction and working too.. For optics- definition, types of images formed.. Ac mei she told me to focus on the principle of transformers and mutual induction definition.. And for pn junction the whole chapter .. I would suggest u to look at the one markers of the related chapters like ac, optics etc from SL arora

[jot]

Video dekhne ayi thi comment section k screenshot le rhi hu 😂😂..wish me good luck 🤞 and you too

[anjana_]

Ligands: gathering/collecting all the question from comment section 😎

[ishaarora]

super Legends are watching after practical 😂

[anjalighanghas]

my practical questions
transformer
types of transformer
no . of turns in step up and step down transformer
principle of transformer

[kashish_]

Questions asked to me:-
1) Name the components already present in the meter bridge
2) Name the components that later attached to the meter bridge
3) Draw the diagram of meter bridge( I drew it infront of him )
4) Do we use traveling microscope to determine the refractive index
5) Name the materials required in the experiment (traveling microscope 🔬 expt)
6) Say the formula used in this experiment

My examiner was so polite, kind, humble.. ☺️
I'll edit it after the results 😁

[khushishinde]

Tomorrow is my practical 😅and I'm watching for some hope for doing well in viva

[anamayshukla]

My Viva questions:
1. Draw diagram of LED. In which biasing is it connected? (we had an activity involving LED this is why he asked even though it is deleted)
2. What is Barrier Potential?
3. Why Convex mirrors are used in rear view mirror ?
4. Explain Kirchoff loop rule and on what principle does it work ?
5. What happens to resistivity of metal and semiconductor on increasing the temperature ?