two metals X and Y have work function 2 eV and 4 eV respectively Which metal will emit electrons when - Physics - Dual Nature Of Radiation And Matter

Question

two metals X and Y have work function 2 eV and 4 eV respectively
Which metal will emit electrons when irridated with a light of
wavelength 400nm and why?

Vara · Accepted Answer

Energy of incident light:E=12400λ in Ao in eV   =124004000    =3
1 eVThe metal X will emit electrons since its work function is less than theenergy of incident light

two metals X and Y have work function 2 eV and 4 eV respectively Which metal will emit electrons when irridated with a light of wavelength 400nm and why?