JEE Main 2022 — Gravitation Question with Solution
From: JEE Main 2022 (Online) 29th July Evening Shift
Question
An object of mass is taken to a height from the surface of earth which is equal to three times the radius of earth. The gain in potential energy of the object will be [If, and radius of earth ]
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Show full solutionCorrect option: A
Correct answer
A48 MJ
Step-by-step explanation
$ \begin{aligned} &=-\frac{G M m}{4 R}+\frac{G M m}{R} \\\\ &=\frac{3 G M m}{4 R}=\frac{3}{4} m g R \\\\ &=48 \mathrm{MJ} \end{aligned} $
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This is a previous-year question from JEE Main 2022, 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.