JEE Main 2022 · PhysicsMultiple choiceSingle correctMediumMulti-step

JEE Main 27 June 2022, Shift 2, Physics Q35

Question 35 of 90 in this shift, Physics question 5 of 30, Section A.

A stone tide to a string of length L is whirled in a vertical circle with the other end of the string at the centre. At a certain instant of time, the stone is at its lowest position and has a speed

u

. The magnitude of change in its velocity, as it reaches a position where the string is horizontal, is

\sqrt{x(u^{2} - gL)}

. The value of

x

is-

(1)3
(2)2Official answer
(3)1
(4)5

Official answer

Option 2

NTA final key.

Chapter: Work, Energy and Power
Topic: Circular Motion
Idea tested: Vertical Circular Motion

Same idea in other shifts

Asked 7× in all

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25 Feb 2021, Shift 1 · Q24A small bob tied at one end of a thin string of length 1 m is describing a vertical circle so that the maximum and minimum tension in the…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.