JEE Main 2023PhysicsWork Power EnergyMediumMCQ

JEE Main 2023Work Power Energy Question with Solution

JEE Main 2023 (15 Apr Shift 1)

Question

A body is released from a height equal to the radius R of the earth. The velocity of the body when it strikes the surface of the earth will be: (Given g= acceleration due to gravity on the earth.)

Choose an option

Show full solutionCorrect option: B
Correct answer
BgR

Step-by-step explanation

Using conservation of mechanical energy,

Ui+Ki=Uf+Kf

-GMm2R+0=-GMmR+12mv2

12mv2=GMm2R

v=GMR=gR

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About this question

This is a previous-year question from JEE Main 2023, covering the Work Power Energy 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.