JEE Main 2023PhysicsGravitationMediumMCQ

JEE Main 2023 — Gravitation Question with Solution

JEE Main 2023 (24 Jan Shift 1)

Question

The weight of a body at the surface of earth is 18 N. The weight of the body at an altitude of 3200 km above the earth's surface is (given, radius of earth Re=6400 km)

Choose an option

Show full solutionCorrect option: D
Correct answer
D8 N

Step-by-step explanation

As height of the object is considerable compared to the radius of the earth, therefore approximation formula can not be used.

So weight at given height,

F=mg'=GMmR+R22=49GMmR2

⇒mg'=49(mg)

=49×18

=8 N

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About this question

This is a previous-year question from JEE Main 2023, 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.