If `lambda_0` and `lambda` be the threshold wavelength and the wavelength of incident light, the velocity of photoelectrons ejected from the metal surface is:

Options

A. `sqrt(((2h)/m)(lambda_(0)-lambda))`
B. `sqrt(((2hc)/m)(lambda_(0)-lambda))`
C. `sqrt(((2hc)/m)((lambda_(0)-lambda)/(lambda_(0)lambda))`
D. `sqrt(((2h)/m)(1/lambda_(0)-1/lambda))`

Answer

C