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Saturday, 31 October

JEE Main 2021 · PhysicsMultiple choiceSingle correctMediumConceptual

JEE Main 22 July 2021, Shift 2, Physics Q13

Question 13 of 90 in this shift, Physics question 13 of 30, Section A.

Consider a situation in which a ring, a solid cylinder and a solid sphere roll down on the same inclined plane without slipping. Assume that they start rolling from rest and having identical diameter. The correct statement for this situation is :
  1. (1)The cylinder has the greatest and the sphere has the least velocity of the centre of mass at the bottom of the inclined plane.
  2. (2)The sphere has the greatest and the ring has the least velocity of the centre of mass at the bottom of the inclined plane.Official answer
  3. (3)All of them will have same velocity.
  4. (4)The ring has the greatest and the cylinder has the least velocity of the centre of mass at the bottom of the inclined plane.

Official answer

Option 2

NTA final key.

Chapter
System of Particles and Rotational Motion
Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

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.