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A certain metal when irradiated by light...

A certain metal when irradiated by light `(v=3.2xx10^(16)Hz)` emits photoelectrons with twice of K.E. as did photoelectrons when the same metal is irradiated by light `(v=2.0xx10^(16)Hz)`. The `v_(0)` of the metal is

A

`1.2 xx 10 ^(14 ) Hz`

B

`8xx 10 ^(15) Hz`

C

`1.2 xx 10 ^(16 ) Hz`

D

`4xx 10 ^(12) Hz`

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The correct Answer is:
B
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