Physics Questions

The absolute refractive index of air is

A force of 20 N displaces an object through 2 m and does a work of 20 J. The angle between the force and displacement is

Which of the following physical quantity measures the rate of work done?

Rectifiers convert _____.

Find the potential energy gained by a body of mass 25 kg, if it is raised by 5 m. (use g = 10 m/s2)

What is the SI unit of pressure?

The value of g on the moon is 1/6th of the value of g on the earth. If a man can jump 1.5 m high on the earth, on the moon, be can jump up to a height of

Due to an acceleration of 1 m/s2 the velocity of a body increases from 15 m/s to 20 m/s in a certain period. Find the displacement (in m) of the body in that period.