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Two particles starts vibrating together in S.H.M. starting from their mean position. If their periods are 40 s and 60 s respectively, their phase difference after 20 s from the start will be

A

`60^(@)`

B

`90^(@)`

C

`30^(@)`

D

`120^(@)`

Text Solution

Verified by Experts

The correct Answer is:
A
`delta=delta_(1)-delta_(2)=omega_(1)t-omega_(2)t=((2pi)/(T_(1))-(2pi)/(T_(2)))t`
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