Escape velocity from a planet of mass M and radius R is v. For another planet of mass 4M and radius 2R, escape velocity is MCQ with Answer and Explanation

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Escape velocity from a planet of mass M and radius R is v. For another planet of mass 4M and radius 2R, escape velocity is

A. √2 v

B. 2v

C. v

D. v/√2

Answer: Option A

Solution (By JKSSB Mock Tests)

v_esc ∝ √(M/R). New ∝ √(4M/2R) = √(2M/R) = √2 √(M/R) = √2 v.

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Correct Answer: Option D

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