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Two pendulum of time periods 3 s and 7 s...

Two pendulum of time periods 3 s and 7 s respectively start oscillating simultaneously from two opposite extreme positions. After how much time they will be in same phase?

A

`(12)/5`s

B

`(21)/4`s

C

`5/2`s

D

`(27)/(10)`s

Text Solution

Verified by Experts

The correct Answer is:
B
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