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Saturday, 31 October

JEE Main 2021 · PhysicsMultiple choiceSingle correctMediumCalculation

JEE Main 27 August 2021, Shift 2, Physics Q6

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

A mass of 50 kg is placed at the centre of a uniform spherical shell of mass 100 kg and radius 50 m. If the gravitational potential at a point, 25 m from the centre is V kg/m. The value of V is :
  1. (1)−60 G-60\ G
  2. (2)−20 G-20\ G
  3. (3)−4 G-4\ GOfficial answer
  4. (4)+2 G+2\ G

Official answer

Option 3

NTA final key.

Same idea in other shifts

Asked 2× in all
  1. 26 Aug 2021, Shift 1 · Q15Inside a uniform spherical shell : (a) the gravitational field is zero. (b) the gravitational potential is zero. (c) the gravitational…EasyOther

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.