JEE Main 2025 — Gravitation Question with Solution
From: JEE Main 2025 (Online) 24th January Evening Shift
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
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.