Which state has the country’s first Graphene

Calculate the work done in moving a charge of 2 C across two points having a potential difference of 12 V.

A silicon sample is doped such that the number of holes far exceeds the number of electrons. Which of the following is true about its conductivity?

Tape recorder should not be kept near one of the following things –

An ant can see objects all around it due to the presence of which type of eyes?

Charges +q and –q are placed at (–d, 0) and (+d, 0). A third charge Q is placed at (0, x). For what value of x will the force on Q be maximum?

A horse cannot pull a cart on a frictionless surface because:

The functioning of a quartz crystal in a watch is based on which principle?

What is the main difference between alternating current (AC) and direct current (DC)?  

Which of the following is a characteristic of sound waves?

The mass of a star is two times the mass of the Sun. How it will come to an end?