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For a certain metal, incident frequency v is five times of threshold frequency `v_(0)` and the maximum velocity of coming out photoelectrons is `8xx10^(6)m" "s^(-1)` If `v=2v_(0)`, the maximum velocity of photoelectrons will be

A

`4xx10^6` m/s

B

`6xx10^6` m/s

C

`8xx10^6` m/s

D

`1xx10^6` m/s

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