JEE Main 2026 · PhysicsMultiple choiceSingle correctMediumCalculation

JEE Main 2 April 2026, Shift 2, Physics Q35

Question 35 of 75 in this shift, Physics question 10 of 25, Section A.

If 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 viscosity of liquid is [tex]Poise. (Take

g = 10

m/s

^2

)

(1) $0.88$
(2) $8.8$ Official answer
(3) $88.8$
(4) $0.088$

Official answer

Option 2

NTA final key.

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

Same idea in other shifts

Asked 4× in all

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
28 Jul 2022, Shift 1 · Q58The 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…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.