JEE Main 2023 — Laws of Motion Question with Solution
JEE Main 2023 (10 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 : An electric fan continues to rotate for some time after the current is switched off.
Reason R: Fan continues to rotate due to inertia of motion.
In the light of above statements, choose the most appropriate answer from the options given below.
Choose an option
Show full solutionCorrect option: C
Step-by-step explanation
When a fan is rotating, it acquires some kinetic energy. When the switch is off, because of its motion, it continues rotating for some time until it stops because of the air friction. So it is due to inertia of motion that fan continues to rotate.
Hence, both A and R are correct and R is the correct explanation of A.
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This is a previous-year question from JEE Main 2023, covering the Laws of Motion 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.