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If I(0) is the threshold wavelength for ...

If `I_(0)` is the threshold wavelength for photoelectric emission, 1 the wavelength of light falling on the surface of a metal and m is the mass of the electron, then the velocity of ejected electron is given by

A

`[(2h)/(m) (lamda_(0) - lamda)]^(1//2)`

B

`[(2hc)/(m) (lamda_(0) - lamda)]^(1//2)`

C

`[(2hc)/(m) xx (lamda_(0) - lamda)/(lamda_(0)lamda)]^(1//2)`

D

`[(2hc)/(m) ((1)/(lamda_(0)) -(1)/(lamda))]^(1//2)`

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The correct Answer is:
C
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