JEE Main 2023 · PhysicsMultiple choiceSingle correctMediumCalculation

JEE Main 15 April 2023, Shift 1, Physics Q35

Question 35 of 90 in this shift, Physics question 5 of 30, Section A.

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.)

(1) $\sqrt{2gR}$
(2) $\sqrt{4gR}$
(3) $\sqrt{\frac{gR}{2}}$
(4) $\sqrt{gR}$ Official answer

Official answer

Option 4

NTA final key.

Chapter: Gravitation
Topic: Gravitational Potential
Idea tested: Exact Potential Energy Change at Large Heights

Same idea in other shifts

Asked 3× in all

5 Apr 2026, Shift 2 · Q32A body of mass $m$ is taken from the surface of earth to a height equal to twice the radius of earth ( $R_e$ ). The increase in potential…EasySingle correct
29 Jul 2022, Shift 2 · Q42An object of mass 1 kg is taken to a height from the surface of earth which is equal to three times the radius of earth. [If,…EasySingle correct

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 108 of the 174 JEE Main shifts held from 2017 to 2026.