SSC CGL 2023, Physics, Mechanics - Questions and Answers

Browse the questions, answers and explanations for Mechanics in Physics, SSC CGL 2023.

1 questions · Page 1 of 1

1.

If the radius of the Earth were doubled (mass unchanged), what would happen to the value of g (acceleration due to gravity) at the surface?

A

g would double

B

g would remain the same

C

g would become one-fourth

D

g would halve

View Answer

Correct Answer: C — g would become one-fourth

Explanation:

$g = GM/R^2$ . If R doubles, $g$ becomes $GM/(2R)^2 = g/4$ . So g becomes one-fourth.