JEE Main 2022 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 27 June 2022, Shift 2, Physics Q33

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

When a ball is dropped into a lake from a height 4.9 m above the water level, it hits the water with a velocity

v

and then sinks to the bottom with the constant velocity

v

. It reaches the bottom of the lake 4.0 s after it is dropped. The approximate depth of the lake is :

(1)19.6 m
(2)29.4 mOfficial answer
(3)39.2 m
(4)73.5 m

Official answer

Option 2

NTA final key.

Chapter: Motion in a Straight Line
Topic: Kinematics in 1D
Idea tested: Free Fall Sign Conventions

Same idea in other shifts

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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.