NEETPhysics-Gravitation
NEET Physics Acceleration due to gravity MCQ Question
Type: MCQ-conceptual-Medium-Class 11
Two planets of radii in the ratio of 2 : 3 are made from the matter the densities of which are in the ratio of 3 : 2 The ratio of acceleration due to gravity g₁:g₂ at the surface of the two planets will be:-
A
1
B
2.25
C
4/9
D
0.12
Correct Answer
Option B
Detailed Explanation
The acceleration due to gravity is given by g = 4/3 π G ρ R. The ratio g₁:g₂ = (ρ₁R₁)/(ρ₂R₂) = (3×2)/(2×3) = 2.25.
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