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Two simple pendulums of length 100 m and...

Two simple pendulums of length 100 m and 121 m start swinging together in the same directionvith same phase.They will swing together again in same phase after.

A

the longer pendulum makes 10 oscilaltions

B

the shorter pendulum makes 10 oscilaltions

C

the longer pendulum makes 11 oscilaltions

D

the shorter pendulum makes 20 oscilaltions

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The correct Answer is:
A
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