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Friday, 9 October

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 vv and kk respectively are (Take radius of earth to be 6400 km and g=9.8g = 9.8 m/s2^2)
  1. (1)11.211.2 km/s; 6.27×1076.27 \times 10^7 JOfficial answer
  2. (2)11.211.2 km/s; 12.54×10712.54 \times 10^7 J
  3. (3)8.88.8 km/s; 6.27×1076.27 \times 10^7 J
  4. (4)8.88.8 km/s; 12.54×10712.54 \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 2× in all
  1. 4 Apr 2025, Shift 2 · Q29An object is kept at rest at a distance of 3R above the earth's surface where R is earth's radius. The minimum speed with which it must be…MediumSingle 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.