JEE Main 2023PhysicsWork Power EnergyEasyNumerical

JEE Main 2023 — Work Power Energy Question with Solution

JEE Main 2023 (08 Apr Shift 1)

Question

The momentum of a body is increased by 50%. The percentage increase in the kinetic energy of the body is________%.

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Show full solutionCorrect answer: 125
Correct answer
125

Step-by-step explanation

The relation of kinetic energy and momentum is given by

K=p22m

The new value of momentum is p'=1.5p

The new value of kinetic energy is

⇒K'=1.5p22m=2.25K

Hence, the percentage increase in kinetic energy is 

K'-KK×100=2.25K-KK=125%

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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.