AIIMS2009Physics-Oscillations
AIIMS 2009 Physics Simple Harmonic Motion Assertion Reason Question
Type: Assertion Reason-conceptual-Medium-Class 11
Assertion : The bob of a simple pendulum is a ball full of water, if a fine hole is made in the bottom of the ball, the time period first increases and then decreases. Reason : As water flows out of the bob the weight of bob decreases.
A
If both assertion and reason are true and reason is the correct explanation of assertion
B
If both assertion and reason are true but reason is not the correct explanation of assertion
C
If assertion is true but reason is false
D
If both assertion and reason are false
Correct Answer
Option B
Detailed Explanation
When ball is completely filled with water, the centre of gravity of the pendulum is at the centre of the ball when water starts flowing out.
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