Physics Questions

Consider a hypothetical planet with a mass equal to half that of Earth and radius is one-third that of Earth. If g is the acceleration due to gravity on Earth, the acceleration due to gravity on the planet will be

The frequency of direct current is _____________

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?

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?

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

In nuclear reactor, cadmium rods are used as which of the following?

An earthquake of magnitude 6 on Richter scale has ______________ times more destructive energy than an earthquake of magnitude 4.

The SI unit of acceleration is _______________.