Question

The time by a photoelectron to come out after the photon strikes is approximately

• A. $10^{-1}s$
• B. $10^{-4}s$
• C. $10^{-10}s$
• D. $10^{-16}s$

Answer 1

Answer: (C)

Emission of photo-electron starts from the surface after incidence of photons in about $10^{-10}s$