JEE Main 2024 · PhysicsMultiple choiceSingle correctEasyRecall

JEE Main 6 April 2024, Shift 2, Physics Q38

Question 38 of 90 in this shift, Physics question 8 of 30, Section A.

Pressure inside a soap bubble is greater than the pressure outside by an amount : (given :

R

= Radius of bubble,

S

= Surface tension of bubble)

(1) $\frac{2S}{R}$
(2) $\frac{4S}{R}$ Official answer
(3) $\frac{S}{R}$
(4) $\frac{4R}{S}$

Official answer

Option 2

NTA final key.

Chapter: Mechanical Properties of Fluids
Topic: Surface Tension
Idea tested: Excess Pressure in Soap Bubbles

Same idea in other shifts

Asked 4× in all

3 Apr 2025, Shift 2 · Q47The excess pressure inside a soap bubble A in air is half the excess pressure inside another soap bubble B in air. If the volume of the…EasyNumerical value
8 Apr 2024, Shift 1 · Q53A liquid column of height 0.04 cm balances excess pressure of a soap bubble of certain radius. If density of liquid is…MediumNumerical value
9 Apr 2024, Shift 2 · Q39The excess pressure inside a soap bubble is thrice the excess pressure inside a second soap bubble. The ratio between the volume of the…EasySingle 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 42 of the 174 JEE Main shifts held from 2017 to 2026.