CBSE > Class 12 > Physics | CBSE Board | Homework Help | myCBSEguide

No products in the cart.

Ask questions which are clear, concise and easy to understand.

Ask Question

Sir there are many frmulas fr the same application hw cn we memorise when to use which1

Posted by Prashant Ojh 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

How to prepare for half yearly physics first 7 chapters till optics its coming . How to revise. Only 2 weeks left including viva

Posted by Trilok Jit Dey 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What i do for pass rhe physics paper above 35 marks

Posted by Deepak Kumar 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Trilok Jit Dey 7 years, 3 months ago

Do about all the derivations of physics 3 times there are about 120 . Then practice some easy numericals do ncert examples and exercise. Thats it . If u want just to pass

ANSWER

What i learn and read physics

Posted by Deepak Kumar 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

A proton and electron entered a perpendicular constant magnetic field with constant velocity.Which one will have greater radius of circular path?

Posted by Swathi Surya 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Ujjwal Chettri 7 years, 3 months ago

Proton as it has more mass r= mv/qB

ANSWER

Define alternating current

Posted by Deepak Pandey 7 years, 3 months ago

CBSE > Class 12 > Physics

2 answers

Pawan Kumar 7 years, 3 months ago

The current whose magnitude and direction changes with time periodically is called an AC. EXAMPLES-- RADIO SIGNALS ETC.

Surbhi . 7 years, 3 months ago

A flow of electricity that vary with time or( Changes directions regularly many times a second ).Radio signals & audio are few examples of a.c

ANSWER

Atmosphere is not electrically neutral .why?

Posted by Surbhi . 7 years, 3 months ago

CBSE > Class 12 > Physics

3 answers

Md Sajid515,22 4 years, 11 months ago

draw lines of force of electric field due to a system of two equal point charges.

Md Sajid515,22 4 years, 11 months ago

atmospher is not electrically neutral.explain why

Anjali Sharma 7 years, 3 months ago

Because they are stripped of electrons and they have a charge that is positive and electrons are negatively charged . When these hit a carbon di oxide atom normally C12 becomes carbon 14

ANSWER

A cooper ball of density 8.6gcm ,1cm in diameter is immersed in oil of density 0.8gcm,if the ball remain suspended in oip in a uniform electirc field of intensity 36000NC acting in a upward direction. What is tha charge on thw ball?

Posted by Anshika Kumari 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Can anyone please describe van de gragh generator, it's working and theory???

Posted by Ritik Yadav 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

State the underlying principle of a potentiometer

Posted by Diwakar Kumar 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Suhani C 7 years, 3 months ago

Potential difference is directly proportional to length of wire

ANSWER

State properties of the material of the wire used in suspension of the coil and moving coil galvanometer

Posted by Mehul Prajapat 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Aj Style 7 years, 3 months ago

It has low twisting & high tensile strength

ANSWER

What is a voltmeter how a galvanometer can be converted into voltmeter

Posted by Mehul Prajapat 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What is an ammeter how can a galvanometer be converted into ammeter explain

Posted by Mehul Prajapat 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Charu Sengar 7 years, 3 months ago

In order to convert a galvanometre a very high resistance known as series resistance is connected in series with galvanometer

ANSWER

Derive an expression for a magnetic field along the axis of an air cored solenoid using ampere's circuital law sketch the magnetic field lines for a for a finite finite solenoid explain why the field at the exterior midpoint is weak while the interior is uniform and strong

Posted by Mehul Prajapat 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Does a solenoid tend to contract or expand when a current is passed through it

Posted by Mehul Prajapat 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Why ammeter connected in series and voltmeter in parallel in the circuit

Posted by Mehul Prajapat 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Obtain an expression for total energy of an electron in an nth orbit of hydrogen atom.

Posted by Vineeth M 5 years, 8 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Why induced emf produce in coils ?

Posted by Shyam Singh 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Varsha Choudhary 7 years, 3 months ago

Due to change in magnetic flux

ANSWER

Why emf is produced in opposite direction in self conductance?

Posted by Teju Kudale 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Rainbow and human eye. Are these included in syllabus?

Posted by Ash Ash 7 years, 3 months ago

CBSE > Class 12 > Physics

2 answers

Ujjwal Chettri 7 years, 3 months ago

No it is not in our syllabus

Shyam Singh 7 years, 3 months ago

Yes

ANSWER

Proof of mirror formulae from convex mirror

Posted by Binayak Shrestha 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Draw the equipotential surface for constant electric field in the z-direction.

Posted by Nidhi Prajapati 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Defination of magnetic flux

Posted by Simmi Simi 7 years, 3 months ago

CBSE > Class 12 > Physics

3 answers

Kanika Sharma 7 years, 3 months ago

It as total no. magnetic lines passing through an area

Goswami Ji 7 years, 3 months ago

No of magnetic field lines pass through the area

Hasan Ali 7 years, 3 months ago

No of magnetic (imaginary) line passing through the normal

ANSWER

What is electric flux ?

Posted by Satyam Kumar 7 years, 3 months ago

CBSE > Class 12 > Physics

3 answers

Shyam Singh 7 years, 3 months ago

The no of electric field lines passing through a particular area

Hasan Ali 7 years, 3 months ago

No of imaginary electric lines passing through the normal

Rishi Jamwal 7 years, 3 months ago

It is defined as the dot product of electric field intensity..

ANSWER

Who is newton

Posted by Kirat Singh 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Navjot Kaur 7 years, 3 months ago

Newton was a scientist who give laws of motion.

ANSWER

What will be the effect on drift velocity if we increase the length of conductor 3.times??

Posted by Sansar Sumra 7 years, 3 months ago

CBSE > Class 12 > Physics

3 answers

Ujjwal Chettri 7 years, 3 months ago

V=eE t/m E has a dependence of 1/square if r That means if u increaae the length by 3 times than drift velocity will have an effect of 1/9 times

Harsh Malik 7 years, 3 months ago

1/3

Divyank Darshi 7 years, 3 months ago

v=i/n e A,,,,no effect on the drift velocity

ANSWER

Two point charges gx and q2 are placed at a distance d apart as shown in the figure. The electric field intensity is zero at the point P on the line joining them as shown. Write two conclusions that you can draw from this. [Delhi2014c]

Posted by Tushar Kharb 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What is special theory of relativity

Posted by Alan Cbse 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

"At the surface of a charge conductor electrostatic field must be normal to the surface at any point". Prove it.

Posted by Felica Ngaihte 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Divyank Darshi 7 years, 3 months ago

Consult to any good book, u will get the answer

ANSWER

On which metal bridge experiment is expresssed??

Posted by Felica Ngaihte 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Page 384 of 739

myCBSEguide App

myCBSEguide

Trusted by 1 Crore+ Students

Test Generator

Test Generator

Create papers online. It's FREE.

CUET Mock Tests

CUET Mock Tests

75,000+ questions to practice only on myCBSEguide app

Google Play

Download myCBSEguide App