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When the light of frequency 2v(0) (where...

When the light of frequency `2v_(0)` (where `v_(0)` is threshold frequency ) is incident on a metal plate, the maximum velocity of electrons emitted is `v_(1)`. When the frequency of the incident rediation is increased to `5v_(0)`, the maximum velocity of electrons emitted from the same plate is `v_(2)`. The ratio of `v_(1)` to `v_(2)` is

A

`4:1`

B

`1:4`

C

`1:2`

D

`2:1`

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