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A particle of mass m moving with speed v...

A particle of mass m moving with speed v hits elastically another stationary particle of mass 2m inside a smooth horizontal circular tube of radius r. The time after which the second collision will take place is

A

`(pi r)/(v)`

B

`(2pi)/(v)`

C

`(pi r)/(2v)`

D

`(pi)/(4v)`

Text Solution

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The correct Answer is:
B
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