If threshold wavelength `(lambda_(0))` for ejection of electron from metal is 330 nm, then work function for the photoelectron emission is

Options

A. `1.2 xx 10^(-18)J`
B. `1.2 xx 10^(-20)J`
C. `6 xx 10^(-19)J`
D. `6 xx 10^(-12)J`

Answer

C