Mark the incorrect statement regarding the photoelectric effect.

Physics · Class 11 · CBSE — Photoelectric Effect And Wave-Particle Duality

1. There is no time lag between the striking of light beam and the ejection of electrons from the metal surface.
2. The number of electrons ejected is inversely proportional to the intensity of light.
3. Photoelectric effect is not observed below threshold frequency.
4. The kinetic energy of the electrons increases with increase in frequency of light used.

Answer

(B) The number of electrons ejected is inversely proportional to the intensity of light.

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