AIIMS 2019 Physics Apparent Weight Assertion Reason Question
Assertion: When the lift moves with uniform velocity the man in the lift will feel weightlessness.
Reason: In downward accelerated motion of lift, apparent weight of a body increases.
If both assertion and reason are true and reason is correct explanation of assertion.
If both assertion and reason are true and reason is not correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
When a lift moves with uniform velocity, the man inside does not experience weightlessness; he feels his normal weight due to the gravitational force acting on him. Weightlessness occurs only in free fall or when the lift is accelerating downwards at the acceleration due to gravity (g). The assertion is false, and the reason is also incorrect because in a downward accelerating motion, the apparent weight decreases, not increases. Thus, both the assertion and reason are false, making option D the correct choice. Options A and B are incorrect because they assume the assertion is true, while option C incorrectly states that the assertion is true and the reason is false.
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