JEE Main 2024PhysicsGravitationEasyMCQ

JEE Main 2024 — Gravitation Question with Solution

JEE Main 2024 (30 Jan Shift 2)

Question

Escape velocity of a body from earth is 11.2 km s-1. If the radius of a planet be one-third the radius of earth and mass be one-sixth that of earth, the escape velocity from the plate is:

Choose an option

Show full solutionCorrect option: D
Correct answer
D7.9 km s-1

Step-by-step explanation

Given: RP=RE3, MP=ME6

Escape velocity is given by, v=2GMR

Therefore,

vE=2GMERE ...(i)

vP=2GMPRP...(ii)

⇒vEvP=2

⇒vP=vE2=11.22=7.9 km s-1

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About this question

This is a previous-year question from JEE Main 2024, covering the Gravitation chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.