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Q.

Time period of a simple pendulum of length l is T1 and time period of a uniform rod of the same length l pivoted about one end and oscillating in a vertical plane is T2. Amplitude of oscillations in both the cases is small. Then T1T2is :

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a

13

b

1

c

43

d

32

answer is D.

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Detailed Solution

For simple pendulum, T1=2πlgFor rod,   T2=2πImgl=2πml23mgl2=2π2l3g T1T2=32
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