JEE Main 2021PhysicsMechanical Properties of FluidsMediumMCQ

JEE Main 2021 — Mechanical Properties of Fluids Question with Solution

JEE Main 2021 (26 Aug Shift 1)

Question

Two narrow bores of diameter 5.0 mm and 8.0 mm are joined together to form a U-shaped tube open at both ends. If this U-tube contains water, what is the difference in the level of two limbs of the tube.
[Take surface tension of water T=7.3×10-2 N m-1, angle of contact =0, g=10 m s-2 and density of water=1.0×103 kg m-3

Choose an option

Show full solutionCorrect option: C
Correct answer
C2.19 mm

Step-by-step explanation

P0-2TR1+h1ρg=P0-2TR2+h2ρg
h1-h2ρg=2T12.5×10-3-14×10-3⇒h1-h2=2.19 mm

Practice this on the real CBT interface

Solve this JEE Main question (and the rest of the Mechanical Properties of Fluids chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.

Solve interactively →

About this question

This is a previous-year question from JEE Main 2021, 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.