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JEE-MAIN SERIES
Physics

Elastic And Inelastic Collisions

7 previous year questions.

Volume: 7 Ques
Yield: Medium

High-Yield Trend

2
2025
1
2023
1
2022
1
2021
2
2019

Chapter Questions
7 MCQs

01
PYQ 2019
medium
physics ID: jee-main
Three blocks and are lying on a smooth horizontal surface, as shown in the figure. and have equal masses, while has mass . Block is given an brutal speed towards due to which it collides with perfectly inelastically. The combined mass collides with , also perfectly inelastically th of the initial kinetic energy is lost in whole process. What is value of ?
1
4
2
5
3
3
4
2
02
PYQ 2019
medium
physics ID: jee-main
Two particles, of masses and , moving, as shown, with speeds of and , collide elastically at the origin. After the collision, they move along the indicated directions with speeds and , respectively. The values of and are nearly :
1
3.2 m/s and 6.3 m/s
2
3.2 m/s and 12.6 m/s
3
6.5 m/s and 6.3 m/s
4
6.5 m/s and 3.2 m/s
03
PYQ 2021
medium
physics ID: jee-main
A body of mass M moving at speed collides elastically with a mass 'm' at rest. After the collision, the two masses move at angles and with respect to the initial direction of motion of the body of mass M. The largest possible value of the ratio M/m, for which the angles and will be equal, is :
1
2
2
3
3
1
4
4
04
PYQ 2022
hard
physics ID: jee-main
A uniform heavy rod of mass kg, cross sectional area and length is hanging from a fixed support. Neglecting the lateral contraction, the elongation in the rod due to its own weight is . The value of is _____(Given Young’s modulus and g =
05
PYQ 2023
medium
physics ID: jee-main
Choose the option showing the correct relation between Poisson’s ratio (\sigma ), Bulk modulus (B) and modulus of rigidity (G).
1

2

3

4

06
PYQ 2025
hard
physics ID: jee-main

As shown below, bob A of a pendulum having a massless string of length is released from 60° to the vertical. It hits another bob B of half the mass that is at rest on a frictionless table in the center. Assuming elastic collision, the magnitude of the velocity of bob A after the collision will be (take as acceleration due to gravity):

bob A of a pendulum having a massless

1

2

3

4

07
PYQ 2025
medium
physics ID: jee-main
Given below are two statements, one is labelled as Assertion (A) and the other is labelled as Reason (R).
Three identical spheres of the same mass undergo one-dimensional
Three identical spheres of the same mass undergo one-dimensional motion as shown in the figure with initial velocities . If we wait sufficiently long for elastic collision to happen, then will be the final velocities. Reason (R): In an elastic collision between identical masses, two objects exchange their velocities. In light of the above statements, choose the correct answer from the options given below:
1
Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
2
(A) is true but (R) is false
3
Both (A) and (R) are true and (R) is the correct explanation of (A)
4
(A) is false but (R) is true

About Elastic And Inelastic Collisions - JEE-MAIN

Elastic And Inelastic Collisions is a vital chapter for JEE-MAIN aspirants. Mastering the concepts covered in this chapter is essential for securing a top rank.

By rigorously practicing the previous year questions associated with this chapter, you can identify high-yield topics, understand the examiner's perspective, and boost your confidence during the actual exam.

Frequently Asked Questions

Why focus on Elastic And Inelastic Collisions PYQs?

Analyzing PYQs for this specific chapter reveals the most frequently tested concepts and the typical complexity of questions, allowing you to tailor your study plan efficiently.

How to best use this analysis?

Review the topic breakdown to see which sub-topics within Elastic And Inelastic Collisions carry the most weight. Then, tackle the questions iteratively to solidify your understanding.