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Pendulum A and B having periodic times 4...

Pendulum A and B having periodic times 4 s and 4.2 s, are made to oscillate simultaneously. At time t = 0, they are in the same phase. After how many complete oscillations of A, they will be again in the same phase?

A

7s

B

14s

C

28s

D

68s

Text Solution

Verified by Experts

The correct Answer is:
D
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