A photon of frequency `v` causes photo electric emission from a surface with threshold frequency `v_(0)`. The de-Broglies wavelength `(lambda)` of the photo electron emitted is given by:
A. `Deltan=(h)/(2mlambda)`
B. `Deltan=(h)/(lambda)`
C. `[1/v_(0)-1/v]=(mc^(2))/(h)`
D. `lambda=sqrt(h/(2mDeltaV))`