## MCQ (Single Correct Answer)

If the earth shrinks such that its mass does not change but radius decreases to one quarter of its original value then one complete day will take...

The weight of a body on surface of earth is 12.6 N. When it is raised to a height half the radius of earth, its weight will be

A body of mass m is thrown vertically upward with speed $$\sqrt3$$ ve, where ve is the escape velocity of a body from earth surface. The final velocit...

An ideal gas of molar mass M is contained in a very tall vertical cylindrical column in the uniform gravitational field. Assuming the gas temperature ...

Assume that the earth moves around the sun in a circular orbit of radius R and there exists a planet which also move around the sun in a circular orbi...

The ratio of accelerations due to gravity g1 : g2 on the surfaces of two planets is 5 : 2 and the ratio of their respective average densities $${{\rho...