JEE Main 2023 — Mechanical Properties of Fluids Question with Solution
JEE Main 2023 (06 Apr Shift 2)
Question
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: When you squeeze one end of a tube to get toothpaste out from the other end, Pascal’s principle is observed.
Reason R: A change in the pressure applied to an enclosed incompressible fluid is transmitted undiminished to every portion of the fluid and to the walls of its container.
In the light of the above statements, choose the most appropriate answer from the options given below.
Choose an option
Show full solutionCorrect option: D
Step-by-step explanation
Pascal's law states that the pressure in a closed incompressible fluid is transmitted equally in all directions.
The formula for pressure is given by
When a toothpaste is squeezed let the pressure transmitted by . At the mouth of the toothpaste the pressure will also be equal to due to Pascal's law. The pressure applied to the tube is transmitted equally throughout the toothpaste. When the pressure reaches the open end, it forces toothpaste out through the opening. Hence, both is correct and is correct explanation for .
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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.