Physics Questions

The weight of a boy on the surface of the moon is 300 N. The weight of the same boy on the surface of the earth will be

If the resistance of a conductor is reduced to half its initial value, then the heating effect in the conductor will become ___.

A body has a weight W on the surface of Earth. What is its weight on a planet whose mass is 15 times that of Earth and a radius that is 4 times that of the earth?

Calculate the frequency (in Hz) of a sound wave of wavelength 5 m travelling with a speed of 360 m/s.

The frequency of direct current is _____________

The SI unit of acceleration is _______________.

Propagation of sound can be visualised as propagation of _____________ variations in the medium.

A person holding a pen in his left hand sees his reflection in the mirror holding the pen in his right hand. This is due to which of the following phenomena?