JEE Main 2025 — Gravitation Question with Solution
JEE Main 2025 (24 Jan Shift 2)
Question
Acceleration due to gravity on the surface of earth is ' '. If the diameter of earth is reduced to one third of its original value and mass remains unchanged, then the acceleration due to gravity on the surface of the earth is g.
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Show full solutionCorrect answer: 9
Correct answer
9
Step-by-step explanation
acceleration due to gravity on surface is given by
Now since diameter is reduced to , radius also reduces to , keeping mass constant
New value of acceleration due to gravity on Earth's surface is
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This is a previous-year question from JEE Main 2025, 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.