JEE Main 2024 — Mechanical Properties of Fluids Question with Solution
JEE Main 2024 (06 Apr Shift 1)
Question
A small ball of mass and density is dropped in a viscous liquid of density . After sometime, the ball falls with constant velocity. The viscous force on the ball is :
Choose an option
Show full solutionCorrect option: D
Correct answer
D
Step-by-step explanation
for constant velocity
$\begin{aligned}
& m g-F_B=F_v \\
& F_v=m g-v \rho_0 g=m g-\frac{m}{\rho} \rho_0 g=m g\left(1-\frac{\rho_0}{\rho}\right)
\end{aligned}$
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This is a previous-year question from JEE Main 2024, covering the Mechanical Properties of Fluids chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.