The weight of a body on a planet is 100 N. If planet's radius is half and density same as Earth, weight becomes MCQ with Answer and Explanation

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The weight of a body on a planet is 100 N. If planet's radius is half and density same as Earth, weight becomes

A. 25 N

B. 200 N

C. 50 N

D. 100 N

Answer: Option C

Solution (By JKSSB Mock Tests)

g = GM/R² = G (ρ 4/3 π R³)/R² ∝ ρ R. If radius half, density same, g becomes half. Weight half = 50 N.

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