Gravitation · Physics · BITSAT

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MCQ (Single Correct Answer)

1
A body which is initially at rest at a height $ R $ above the surface of the Earth of radius $ R $, falls freely towards the Earth, then its velocity on reaching the surface of the Earth is
BITSAT 2024
2

A man of mass $m$ starts falling towards a planet of mass $$M$$ and radius $$R$$. As he reaches near to the surface, he realizes that will pass through a small role in the planet. As he enters the role, we sees that the planet is really made of two pieces a spherical shell of negligible thickness of mass $$3 M / 4$$ and a point mass $$M / 4$$ at the centre. Change in the force of gravity experienced by the man is

BITSAT 2023
3

What will be the acceleration due to gravity at a depth d, where g is acceleration due to gravity on the surface of earth?

BITSAT 2022
4

From a solid sphere of mass M and radius R, a spherical portion of radius $${R \over 2}$$ is removed as shown in the figure.

BITSAT 2021 Physics - Gravitation Question 6 English

Taking gravitational potential V = 0 at r = $$\infty$$, the potential at the centre of the cavity thus formed is

BITSAT 2021
5

If the earth stops rotating about its axis, then what will be the change in the value of g at a place in the equatorial plane? (Radius of earth = 6400 km)

BITSAT 2021
6

Two spheres of the same material and same radii r are touching each other. The gravitational force between the spheres is proportional to

BITSAT 2020
7

A satellite is moving around the earth with speed v in a circular orbit of radius r. If the orbit radius is decreased by 2%, its speed will increase by

BITSAT 2020
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