The threshold frequency of a metal is f0...

The threshold frequency of a metal is `f_0`. When the light of frequency `2f_0` is incident on the metal plate, the maximum velocity of electrons emitted is `v_1`. When the frequency of the incident radiation is increased to `5f_0`, the maximum velocity of electrons emitted is `v_2`. Find the ratio of `v_1 and v_2`.

`V_(1)/V_(2)=1/8`

`V_(1)/V_(2)=1/4`

`V_(1)/V_(2)=1/16`

`V_(1)/V_(2)=1/2`

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