# When radiation of wavelength A is used to illuminate a metallic surface, the stopping potential is V.

more_vert

When radiation of wavelength A is used to illuminate a metallic surface, the stopping potential is V. When the same surface is illuminated with radiation of wavelength 3A, the stopping potential is $V\over4$. If the threshold wavelength for the metallic surface is n$\lambda$ then value of n will be :

Numerical Value Type

more_vert
Dual nature of matter and radiations, photons and photoelectric effect