Question

The phenomenon of photoelectric emission depends on

• A. wave length of incident light
• B. work function of surface
• C. nature of surface
• D. all of the above

Answer 1

Answer: (D)

"Photoelectric effect is the phenomenon of emission of electrons from the surfaces of certain substances, mainly metals, when light of shorter wavelength is incident upon them."

So it depends upon wave length of incident light, work function of surface as it takes certain energy to eject an electron from a metal surface and nature of surface