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De broglie wavelength associated with a particle moving with momentum (P) and mass (m)

Posted by Rohit Mehra 6 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Archana Kumàri 6 years, 1 month ago

lamda=h/p

ANSWER

Physics practical mein kya kya puchh sakte hai?

Posted by Jk Verma 6 years, 1 month ago

CBSE > Class 12 > Physics

5 answers

Pradeep Poonia 6 years, 1 month ago

hello students I was appointed as External Examiner in a School. So i would like to recommend you being a teacher that just learn your concepts. Its upto the examiner what he is going to ask you in practical exam. There is no specification for viva questions. Examiner can ask questions from your experiment, Your project or from theory. I hope, It will help you. Thank You

Priya Singh 6 years, 1 month ago

Basic question from syllabus especially from ray optics and practical and project

Yogesh Jha 6 years, 1 month ago

Only project

Drishti Sadawarte 6 years, 1 month ago

Practical and project

Smita Maheshwari 6 years, 1 month ago

About ur practical file

ANSWER

How to remove zero error from voltmeter and ammeter

Posted by Kush Birla 6 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Pradeep Poonia 6 years, 1 month ago

There is a screw on ammeter and voltmeter just under the needle...using a screw driver we can adjust the needle at zero if its not on zero.

ANSWER

Find out the magnetic field at centre o as shown in fig in segment

Posted by Bhoomika Sharma 6 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What happened to the velocity of emitted electrons when the wavelength of incident light is decreased

Posted by Priyanshu Mishra 6 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Pradeep Poonia 6 years, 1 month ago

E=hc/Lemda lemda is decreased > E will increase hence kinetic energy of emitted electron will increase means velocity will increase.

ANSWER

Can a metal sphere of radius 1cm hold a charge of 1 Coulomb?

Posted by Mayank 007 6 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Mayank 007 6 years, 1 month ago

Thanxx

Ankush Santra 6 years, 1 month ago

No, because it will increase its voltage to such a high extent that the charges will start leaking. Hence it can't hold such high amount of charge.

ANSWER

Hii kisi ka physics practical hogya kya???

Posted by Ishita Ishita 6 years, 1 month ago

CBSE > Class 12 > Physics

15 answers

Ishita Ishita 6 years, 1 month ago

Hnm thnk u...kisi ka ppr nhi hua ab tkk it means

Srishti Choudhary ✍⏳ 6 years, 1 month ago

Or jo b experiments kraye honge tumhare teacher n vo sab ache s aane chahiye...

Srishti Choudhary ✍⏳ 6 years, 1 month ago

Koi b 1 topic ready kr lo..uss par hi viva hoga or jo project file or model hoga usko b ache s prep kr lo..

Ishita Ishita 6 years, 1 month ago

????

Ishita Ishita 6 years, 1 month ago

To plzz btao

Gurdeep Singh 6 years, 1 month ago

Hmm

Ishita Ishita 6 years, 1 month ago

Aur kuch bhi hoga na ???

Vinay Gautam 6 years, 1 month ago

Internal resistance;

Vinay Gautam 6 years, 1 month ago

Ua done

Bhoomika Sharma 6 years, 1 month ago

Jan 28

Ishita Ishita 6 years, 1 month ago

Practicals ----experiments*

Ishita Ishita 6 years, 1 month ago

Hey frnds plz its my request ...help

Ishita Ishita 6 years, 1 month ago

Then plz tell me the practicals that came so that i can get an idea

Gourav Pooniya 6 years, 1 month ago

Ya

Parmendra Arya 6 years, 1 month ago

Hmm ho gya

ANSWER

Viva question for physics

Posted by Aamir Ansari 6 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Srishti Choudhary ✍⏳ 6 years, 1 month ago

Koi 1 topic jo ache s aata ho vo bta dena or jis topic par project file hogi ussko ache s kr lena ready

Nirmal Nithish 6 years, 1 month ago

And your project

Nirmal Nithish 6 years, 1 month ago

About refractive index

ANSWER

Which chapter is best for viva questions in physics

Posted by Sejal Uniyal 6 years, 1 month ago

CBSE > Class 12 > Physics

4 answers

Omee Singh 6 years, 1 month ago

Optics

Vinay Gautam 6 years, 1 month ago

Atom and nuclei

Nirmal Nithish 6 years, 1 month ago

Moving charges and magnetism

Sukirti Sharma 6 years, 1 month ago

semiconductor

ANSWER

Can anyone please explain how do we get the formula for calculating G using R and S, that is G=RS/R-S ???

Posted by Rajat Barwar 6 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Pradeep Poonia 6 years, 1 month ago

https://youtu.be/dNRXVJozwOY watch this video starting from 4:50 min of this video.

ANSWER

A charge moving with uniform velocity produces ____________. Fillup

Posted by Tanshu Chaudhary 6 years, 1 month ago

CBSE > Class 12 > Physics

6 answers

Chirag Sharma 6 years, 1 month ago

Em waves

Pradeep Poonia 6 years, 1 month ago

em wave is generated due to accelerated charge not due to charge moving with uniform velocity

P G 6 years, 1 month ago

electromagnetic wave

Pradeep Poonia 6 years, 1 month ago

sorry that was mistaken....answer will be "both electric and magnetic fields"..even "magnetic field" will also go.

Pradeep Poonia 6 years, 1 month ago

accelerated charge produce both electric as well magnetic fields but with uniform velocity only electric field is produced.

Pradeep Poonia 6 years, 1 month ago

electric field

ANSWER

The heat produced by 100W heated in 2 minutes is equal to

Posted by Pranjal Gupta 6 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Chirag Sharma 6 years, 1 month ago

Power=i²R=100W Heat=i²Rt =100 ×120=12000J ,12KJ

Pradeep Poonia 6 years, 1 month ago

100×2×60=12 KJ

ANSWER

True /False The minimum height of a plane mirror required to view the full image of an object is 1/2 of the height of the object.

Posted by Suryansh Agarwal 6 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Santosh Kumar 6 years, 1 month ago

True

Aamir Ansari 6 years, 1 month ago

Trur

Pradeep Poonia 6 years, 1 month ago

true

ANSWER

To determine angle of minimum deviation for given prisms by plotting a graph between angle of in advance and angle of deviation

Posted by Kuldeep Singh 6 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

An early model for an atom comsidered it to have a positively chayhed point nucleus of charge Ze, surrounded by a uniform density of negative charge up to aradius R. The atom as a whole neutral. For this model, what is the electric field at a distance r from the nucleus?

Posted by Shahbaz Ansari 6 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Pradeep Poonia 6 years, 1 month ago

Kq/r^2 = KZe/R^2

ANSWER

Four charges +q +q -q -q are placed at four corners of a square

Posted by Aisharya Ishu 6 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Ishita Ishita 6 years, 1 month ago

What to do bro???

ANSWER

A compound microscope has an objective of focal lengh 5cm. A small object is kept at 2.5cm from the objective. If the final image formed at infinity, find the distance between the objective and eyepiece lens

Posted by Anjali Verma 6 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Pradeep Poonia 6 years, 1 month ago

we need to draw diagram for such problems...and we can not make diagram here

ANSWER

Why is the magnetic field radial in a moving coil galvanometer explain how it is achieved

Posted by Aadil Malik 6 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Pradeep Poonia 6 years, 1 month ago

to get angle 90 degree so that we get maximum value every time

ANSWER

Anyone plz tell remove chapter or topics in physics subjec?

Posted by Utkarsh Chauhan 6 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Akriti Trivedi 6 years, 1 month ago

Transittors, logic gates and communication.

Kriti Sharma 6 years, 1 month ago

Transistors

Shivani Thakur 6 years, 1 month ago

Thr last one-communication...

ANSWER

removed chapter or topic in 2019-20

Posted by Sagar Kushwaha 6 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Shivani Thakur 6 years, 1 month ago

Ysss..,.the last one....communication..?

Pradeep Poonia 6 years, 1 month ago

last communication chapter

ANSWER

Describe the construction and working of afull wave rectifuer using p-n junction diode

Posted by Sanjata Yengkhom Yengkhom 6 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Pradeep Poonia 6 years, 1 month ago

it is difficuilt to answer such questions here

ANSWER

Derive the dreft velocity?

Posted by Uknown Ips 6 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Anshu Dwivedi 6 years, 1 month ago

When conductor is connected to another device in which electric field stabalize in conductor is called as drift velocity. Mathemaical formula:eEtou/m Derivation:let the initial velocity of elctron :u1+u2+u3+..............+un. But, after applying external filed as battery the final velocity are :v1+v2+v3+.........+vn Therefore,average velocity are :v1+v2+v3+v4+.......+vn/n :u+at1+u+at2+.............utn/n Then initial velocity is equal to zero. So,vd=atou From this ,F=ma And the valu of F=eE Compare both equation to get the drift velocity.

Shivani Thakur 6 years, 1 month ago

It is the average velocity aquired by the electrons ti take a drift from lower potential to higher potential..?

Yogita Ingle 6 years, 1 month ago

Drift velocity is defined as the average velocity attained by the particles (electrons) of a given material due to an electric field which is proportional to current. Ohm’s law can be expressed in terms of drift velocity as follow:

u=μE

Where,

u: drift velocity (m/s)

μ: material’s electron mobility (m2/V.s)

E: electric field (V/m)

Derivation of Drift velocity

Following is the derivation of drift velocity:

<nobr>F=−μE</nobr>

<nobr>a=F/m=−μE/m</nobr>

<nobr>u=v+at</nobr>

Here,

v = 0

t = T (relaxation time that is the time required by an electron to return to its initial equilibrium value)

<nobr>u=aT</nobr> (substituting for v and u)

<nobr>∴u=(−μE/m)T</nobr> (substituting for a)

This is the final equation explaining drift velocity.

ANSWER

Compartment preperation kaise kare

Posted by Jai Murlidhar 6 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Âññü Šîñg*H??? 6 years, 1 month ago

pehle board to ho jaaye?

Râhūl ;-),?? 6 years, 1 month ago

Exams se pehle compartment ?? how's it possible dude?

Shivani Thakur 6 years, 1 month ago

?????..????...????

ANSWER

Compartment 2019 -2020 syallabus

Posted by Jai Murlidhar 6 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

May i know about the viva ques from the to determine the resistance percm of given wire

Posted by Jasneet Kaur 6 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Pradeep Poonia 6 years, 1 month ago

1. Which Law it is based on? 2. what apparatus are used? 3. Questions related to all apparatus like what is rheostate, voltmeter, ammeter etc 4. the material of wire used for resistance - mangnin and constantan 5. range of voltmeter and ammeter 6. least count of voltmeter and ammeter etc

ANSWER

coulamb law derivation f12=-f21

Posted by Harsh Bohra 6 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Puneet Tiwari 6 years, 1 month ago

It states the Newton's third law

ANSWER

Physics pratical main kya kya puch sakte h

Posted by Priya Singh 6 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Pradeep Poonia 6 years, 1 month ago

Aapke practical se ya jo aapne report banayi h us se related simple conceptual questions puche ja sakte hain. ya fir theory me kisi bhi chapter se. Jitna aage se aage deep questions hote jaenge. Jyada paresan nahi hona hota...na aata ho to hum kah sakte hain nahi aata sir.

ANSWER

Sample paper solve krne s kitna % syllabus cover ho skta h??? may be ?

Posted by Âññü Šîñg*H??? 6 years, 1 month ago

CBSE > Class 12 > Physics

6 answers

Anju Yadav 6 years, 1 month ago

99%

Shivani Thakur 6 years, 1 month ago

?

Âññü Šîñg*H??? 6 years, 1 month ago

Aligarh?

Shivani Thakur 6 years, 1 month ago

..annu from where are u??

Âññü Šîñg*H??? 6 years, 1 month ago

Okk

Ã♥╣[-_-]╠♥J ??? 6 years, 1 month ago

50%..?

ANSWER

Viva quedtions based on half wave rectifier?

Posted by Nikunj Singh 6 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Pradeep Poonia 6 years, 1 month ago

1. What is rectifier? 2. Why Half wave rectifier is not used in practice, why full wave is used? 3. Does frequency change in output in HWR or FWR? 4. Input output diagram for HWR 5. Working of HWR etc

ANSWER

Principle of wheatstone bridge

Posted by Priyanshi Gupta 6 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

May Chotaliya 6 years, 1 month ago

R1/R2 = R3/R4 depends upon how you set those resistance.

ANSWER

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