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The threshold wavelength for certain met...

The threshold wavelength for certain metal is `lambda _(0)`. When a light of wavelength ` (lambda_(0))//(2) ` is incident on it , the mximum velocity of photelectrons is `10^(6) m//s`. If the wavelength of the incident radiation is reduced to `(lambda _(0) // (5)`, then the maximum velocity of the photoelectrons in `m//s` will be ,

A

`2.5 xx 10^(6)`

B

`5 xx 10^(6)`

C

`4 xx 10^(6)`

D

`2 xx 10^(6)`

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The correct Answer is:
D
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