An object is dropped is an unknown planet from height 50 m, it reaches the ground is 2 s. The acceleration due to gravity in this unknwon planet is

Assertion : A stone and a feather dropped from the same height do not reach the ground at the same time. Reason : Acceleration due to gravity is dependent on the mass of the object.

Assertion : A stone and a feather dropped from the same height do not reach the ground at the same time. Reason : Acceleration due to gravity is dependent on the mass of the object.

Two planets are of the same material but their radii are in the ratio 2:1 . Then ratio of accelerations due to gravity on those two planets is

The ratio of the masses of two planets is 2 : 3 and the ratio of their radii is 3:2 The ratio of acceleration due to gravity on these two planets is

The mass of a planet is 4 times the mass of the earth and its radius is 2 times the radius of the earth. The acceleration due to gravity on that planet is