Assertion : The percentage change in time period is 1.5% if the length of simple pendulum increases by 3%.Reason: Time period is directly proportional to length of pendulum.
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a
If both the assertion and reason are true and reason is a true explanation of the assertion.
b
If both the assertion and reason are true but the reason is not the correct explanation of assertion.
c
If the assertion is true but reason is false.
d
If both the assertion and reason are false.
answer is C.
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Detailed Solution
Time period of simple pendulum of length l isT = 2πlg⇒T ∝ l∴ ∆TT = 12∆ll∆TT= 12×3 = 1.5%
Assertion : The percentage change in time period is 1.5% if the length of simple pendulum increases by 3%.Reason: Time period is directly proportional to length of pendulum.