JEE Main 2026 · PhysicsMultiple choiceSingle correctEasyMulti-step

JEE Main 8 April 2026, Shift 2, Physics Q29

Question 29 of 75 in this shift, Physics question 4 of 25, Section A.

A gas balloon is going up with a constant velocity of 10 m/s. When this balloon reached a height of 75 m, a stone is dropped from it and balloon keeps moving up with the same velocity. The height of the balloon when the stone hits the ground is ________ m. (Take

g = 10

m/s

^2

)

(1)85
(2)150
(3)129
(4)125Official answer

Official answer

Option 4

NTA final key.

Chapter: Motion in a Straight Line
Topic: Kinematics in 1D
Idea tested: Dropping Objects from Moving Frames

Same idea in other shifts

Asked 3× in all

25 Jul 2021, Shift 2 · Q2A balloon was moving upwards with a uniform velocity of 10 m/s. An object of finite mass is dropped from the balloon when it was at a…MediumSingle correct
5 Sep 2020, Shift 1 · Q3A helicopter rises from rest on the ground vertically upwards with a constant acceleration g. A food packet is dropped from the helicopter…MediumSingle correct

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.