JEE Main 2022 · PhysicsNumerical answerNumerical valueMediumCalculation

JEE Main 28 July 2022, Shift 1, Physics Q58

Question 58 of 90 in this shift, Physics question 28 of 30, Section B.

The diameter of an air bubble which was initially 2 mm, rises steadily through a solution of density 1750 kg m

^{-3}

at the rate of 0.35 cms

^{-1}

. The coefficient of viscosity of the solution is __________ poise (in nearest integer). (the density of air is negligible).

Official answer

NTA final key (2022 Session 2).

Chapter: Mechanical Properties of Fluids
Topic: Viscosity
Idea tested: Terminal Velocity of Rising Bubbles

Same idea in other shifts

Asked 4× in all

2 Apr 2026, Shift 2 · Q35If an air bubble of diameter 2 mm rises steadily through a liquid of density 2000 kg/m $^3$ at a rate of 0.5 cm/s, then the coefficient of…MediumSingle correct
8 Apr 2023, Shift 1 · Q52An air bubble of diameter $6\ \mathrm{mm}$ rises steadily through a solution of density $1750\ \mathrm{kg/m^3}$ at the rate of…MediumNumerical value
30 Jun 2022, Shift 1 · Q35An air bubble of negligible weight having radius r rises steadily through a solution of density σ at speed $v$ . The coefficient of…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.