JEE Main 2022 · PhysicsMultiple choiceSingle correctEasyApplication

JEE Main 29 June 2022, Shift 1, Physics Q44

Question 44 of 90 in this shift, Physics question 14 of 30, Section A.

The 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 density is four times and radius is half of the planet 'A', is :

(1) $12\ \mathrm{kms^{-1}}$ Official answer
(2) $24\ \mathrm{kms^{-1}}$
(3) $36\ \mathrm{kms^{-1}}$
(4) $6\ \mathrm{kms^{-1}}$

Official answer

Option 1

NTA final key (2022 Session 1).

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

Same idea in other shifts

Asked 6× in all

30 Jan 2024, Shift 2 · Q36Escape 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…EasySingle correct
31 Jan 2024, Shift 2 · Q36The mass of the moon is $\frac{1}{144}$ times the mass of a planet and its diameter is $\frac{1}{16}$ times the diameter of a planet. If…EasySingle correct
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
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
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 42 of the 174 JEE Main shifts held from 2017 to 2026.