JEE Main 2022 · PhysicsNumerical answerNumerical valueMediumCalculation

JEE Main 25 June 2022, Shift 1, Physics Q53

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

The velocity of upper layer of water in a river is 36

\mathrm{kmh^{-1}}

. Shearing stress between horizontal layers of water is

10^{-3}\ \mathrm{Nm^{-2}}

. Depth of the river is __________ m. (Co-efficient of viscosity of water is

10^{-2}

Pa.s)

Official answer

100

NTA final key.

Chapter: Mechanical Properties of Fluids
Topic: Viscosity
Idea tested: Newton's Law of Viscosity

Same topic in other shifts

All Viscosity questions

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 2026, Shift 2 · Q34A spherical liquid drop of radius $R$ acquires the terminal velocity $v_1$ when falls through a gas of viscosity $\eta$ . Now the drop is…MediumSingle correct
3 Apr 2025, Shift 2 · Q32A solid steel ball of diameter 3.6 mm acquired terminal velocity $2.45 \times 10^{-2}$ m/s while falling under gravity through an oil of…EasySingle correct
6 Apr 2024, Shift 1 · Q35A small ball of mass m and density $\rho$ is dropped in a viscous liquid of density $\rho_0$ . After sometime, the ball falls with constant…MediumSingle correct
8 Apr 2024, Shift 2 · Q53Small water droplets of radius 0.01 mm are formed in the upper atmosphere and falling with a terminal velocity of 10 cm/s. Due to…MediumNumerical value
9 Apr 2024, Shift 2 · Q40A spherical ball of radius $1\times10^{-4}$ m and density $10^5\ \mathrm{kg/m^3}$ falls freely under gravity through a distance $h$ before…HardSingle 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.