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JEE Main 2026 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 4 April 2026, Shift 2, Physics Q30

Question 30 of 75 in this shift, Physics question 5 of 25, Section A.

The height in terms of radius of the earth (

R

), at which the acceleration due to gravity becomes

\frac g9

, where

g

is acceleration due to gravity on earth's surface, is ________.

(1) $\sqrt3\,R$
(2) $2\sqrt2\,R$
(3) $2R$ Official answer
(4) $\frac49R$

Official answer

Option 3

NTA final key.

Chapter: Gravitation
Topic: No close match in our taxonomy
Idea tested: No close match in our taxonomy

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.