JEE Main 2023PhysicsMechanical Properties of FluidsEasyNumerical

JEE Main 2023 — Mechanical Properties of Fluids Question with Solution

JEE Main 2023 (10 Apr Shift 2)

Question

Figure below shows a liquid being pushed out of the tube by a piston having area of cross section 2.0 cm2. The area of cross section at the outlet is 10 mm2. If the piston is pushed at a speed of 4 cm s-1, the speed of outgoing fluid is _____ cm s-1

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Show full solutionCorrect answer: 80
Correct answer
80

Step-by-step explanation

The given data is 

A1=2×10-4 m2A2=10×10-6 m2v1=4 cm s-1

Using equation of continuity which is a conservation of mass principle,

A1v1=A2v2

⇒v2=A1v1A2=2×10-4×410×10-6

= 80 cm s-1

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About this question

This is a previous-year question from JEE Main 2023, 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.