JEE Main 2024 · PhysicsNumerical answerNumerical valueMediumMulti-step

JEE Main 8 April 2024, Shift 1, Physics Q53

Question 53 of 90 in this shift, Physics question 23 of 30, Section B.

A liquid column of height 0.04 cm balances excess pressure of a soap bubble of certain radius. If density of liquid is

8\times10^3\ \mathrm{kg\,m^{-3}}

and surface tension of soap solution is

0.28\ \mathrm{N\,m^{-1}}

, then diameter of the soap bubble is ________ cm. (if

g=10\ \mathrm{m\,s^{-2}}

)

Official answer

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
6 Apr 2024, Shift 2 · Q38Pressure inside a soap bubble is greater than the pressure outside by an amount : (given : $R$ = Radius of bubble, $S$ = Surface tension…EasySingle correct
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.