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in Physics by (83.7k points)

 A simple pendulum has a bob suspended by an  inextensible thread of length 1 metre from a point A of suspension. At the extreme position of oscillation, the thread is suddenly caught by a peg at a point B distant (1/4) m from A and the bob begins to oscillate in the new condition. The change in frequency of oscillation of the pendulum is approximately given by (g= 10 m/s2)

1 Answer

+1 vote
by (92.4k points)
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Best answer

Correct option  (b)

Explanation:

 Length of the pendulum is l = 1 m

Now since the pendulum thread is caught by a peg ( 1/4) m from the original point of suspension. so the new length of the pendulum is 

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