MCQs on Gravitation

MCQs on Gravitation

What happens to the gravitational potential at the centre of the uniform spherical shell which shrinks gradually?

(a) Remains constant

(b) Decreases

(c) Increases

(d) Oscillates

Answer: (b) Decreases

Choose the factor on which the orbital velocity does not depend when the satellite is orbiting close to the earth’s surface

(a) The mass of the earth

(b) The mass of the satellite

(c) The orbital radius

(d) The radius of the earth

Answer: (b) The mass of the satellite

The atmosphere around the earth is held by

(a) Gravity

(b) Winds

(c) Clouds

(d) None of the above

Answer: (a) Gravity