JEE Main 2024 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 30 January 2024, Shift 2, Physics Q36

Question 36 of 90 in this shift, Physics question 6 of 30, Section A.

Escape velocity of a body from earth is

11.2\ km/s

. If the radius of a planet be one-third the radius of earth and mass be one-sixth that of earth, the escape velocity from the planet is :

(1) $4.2\ km/s$
(2) $7.9\ km/s$ Official answer
(3) $8.4\ km/s$
(4) $11.2\ km/s$

Official answer

Option 2

NTA final key.

Chapter: Gravitation
Topic: Orbital Mechanics
Idea tested: Escape Velocity

Same idea in other shifts

Asked 8× in all

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13 Apr 2023, Shift 2 · Q35Given below are two statements: Statement I : For a planet, if the ratio of mass of the planet to its radius increases, the escape…EasyTwo statements
29 Jun 2022, Shift 1 · Q44The escape velocity of a body on a planet 'A' is $12\ \mathrm{kms^{-1}}$ . The escape velocity of the body on another planet 'B', whose…EasySingle correct
3 Aug 2021, Shift 2 · Q6A particle is projected from the mid-point of the line joining two fixed particles each of mass $m$ in free space. If the separation…HardSingle correct
22 Jul 2021, Shift 2 · Q12A body is projected vertically upwards from the surface of earth with a velocity sufficient enough to carry it to infinity. The time taken…HardSingle correct
9 Jan 2020, Shift 2 · Q7Planet A has mass $M$ and radius $R$ . Planet B has half the mass and half the radius of Planet A. If the escape velocities from the…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.