JEE Main 2026 · PhysicsMultiple choiceSingle correctMediumCalculation

JEE Main 2 April 2026, Shift 2, Physics Q31

Question 31 of 75 in this shift, Physics question 6 of 25, Section A.

If a body of mass 1 kg falls on the earth from infinity, it attains velocity (v) and kinetic energy (k) on reaching the surface of earth. The values of

v

and

k

respectively are (Take radius of earth to be 6400 km and

g = 9.8

m/s

^2

)

(1) $11.2$ km/s; $6.27 \times 10^7$ JOfficial answer
(2) $11.2$ km/s; $12.54 \times 10^7$ J
(3) $8.8$ km/s; $6.27 \times 10^7$ J
(4) $8.8$ km/s; $12.54 \times 10^7$ J

Official answer

Option 1

NTA final key.

Chapter: Gravitation
Topic: Gravitational Potential
Idea tested: Escape Velocity and Potential Relation

Same idea in other shifts

Asked 8× in all

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13 Apr 2023, Shift 1 · Q36A planet having mass 9 Me and radius $4R_e$ , where Me and Re are mass and radius of earth respectively, has escape velocity in km/s given…EasySingle correct
31 Aug 2021, Shift 1 · Q17The masses and radii of the earth and moon are ( $M_1$ , $R_1$ ) and ( $M_2$ , $R_2$ ) respectively. Their centres are at a distance 'r' apart.…MediumSingle correct
25 Feb 2021, Shift 1 · Q1Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : The escape velocities…EasyAssertion–reason
17 Mar 2021, Shift 1 · Q26The radius in kilometer to which the present radius of earth (R = 6400 km) to be compressed so that the escape velocity is increased 10…EasyNumerical value
8 Jan 2020, Shift 2 · Q22An asteroid is moving directly towards the centre of the earth. When at a distance of 10 R (R is the radius of the earth) from the earths…MediumNumerical value

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.