Questions

A body of weight W newton is at the surface of the earth.

A body of weight W newton is at the surface of the earth. Its weight at a height equal to…

4 point charges each +q is placed on the circumference of a circle

4 point charges each +q is placed on the circumference of a circle of diameter 2d in such a way…

A charge Q is uniformly distributed over a large plastic plate. The electric field

A charge Q is uniformly distributed over a large plastic plate. The electric field at point P close to centre…

A solid which is transparent to visible light and whose conductivity increases

A solid which is transparent to visible light and whose conductivity increases with temperature is formed by Options (a) Metallic…

A change of 0.04 V takes place between the base and the emitter when an input

A change of 0.04 V takes place between the base and the emitter when an input signal is connected to…

Out of the following options which one can be used to produce a propagating

Out of the following options which one can be used to produce a propagating electromagnetic wave? Options (a) A stationary…

A coil has an area of 0.05 m² and it has 800 turns. It is placed perpendicularly

A coil has an area of 0.05 m² and it has 800 turns. It is placed perpendicularly in a magnetic…

A copper disc of radius 0.1 m is rotated about its centre, with 10 revolutions

A copper disc of radius 0.1 m is rotated about its centre, with 10 revolutions per second, in a uniform…

During production of cathode ray

During production of cathode ray Options (a) d.c. source is connected across cathode ray tube (b) a.c. source is connected…

Excitation energy of a hydrogen like ion, in its first excitation state, is 40.8 eV.

Excitation energy of a hydrogen like ion, in its first excitation state, is 40.8 eV. The energy needed to remove…