JEE Main 2023 · PhysicsMultiple choiceSingle correctMediumMulti-step

JEE Main 13 April 2023, Shift 1, Physics Q33

Question 33 of 90 in this shift, Physics question 3 of 30, Section A.

A disc is rolling without slipping on a surface. The radius of the disc is R. At t = 0, the top most point on the disc is A as shown in figure. When the disc completes half of its rotation, the displacement of point A from its initial position is

The figure, in words

Disc of radius R resting on a horizontal surface, topmost point labelled A, centre marked with radius R drawn to the left; curved arrow at left indicating counter-clockwise rotation.

(1) $2R\sqrt{1+4\pi^2}$
(2) $2\,R$
(3) $R\sqrt{\pi^2+1}$
(4) $R\sqrt{\pi^2+4}$ Official answer

Official answer

Option 4

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