Photoelectric work- function of a metal ...

Photoelectric work- function of a metal is `1 eV.` Light of wavelength `lambda = 3000 Å` falls on it. The photoelectrons come out with maximum velocity

A

10 metres/sec

B

`10^(2)` metres/sec

C

`10^(4)` metres/sec

D

`10^(6)` metres/sec

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