JEE Main 2024 · PhysicsMultiple choiceSingle correctMediumMulti-step

JEE Main 1 February 2024, Shift 1, Physics Q35

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

A simple pendulum of length 1 m has a wooden bob of mass 1 kg. It is struck by a bullet of mass

10^{-2}

kg moving with a speed of

2\times10^{2}\ \mathrm{ms^{-1}}

. The bullet gets embedded into the bob. The height to which the bob rises before swinging back is. (use g = 10 m/s

^2

)

(1)0.20 mOfficial answer
(2)0.30 m
(3)0.35 m
(4)0.40 m

Official answer

Option 1

NTA final key.

Chapter: Work, Energy and Power
Topic: Collisions
Idea tested: Ballistic Pendulum

Same idea in other shifts

Asked 3× in all

27 Jun 2022, Shift 1 · Q60A pendulum of length 2 m consists of a wooden bob of mass 50 g. A bullet of mass 75 g is fired towards the stationary bob with a speed…MediumNumerical value
16 Mar 2021, Shift 2 · Q14A large block of wood of mass M = 5.99 kg is hanging from two long massless cords. A bullet of mass m = 10 g is fired into the block and…MediumDiagram basedHas a figure

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.