Home Physics Electron, Photon, Photoelectric Effect and X-rays Photon and Photoelectric Effect The number of photo-electrons emitted per se…
Physics Electron, Photon, Photoelectric Effect and X-rays Photon and Photoelectric Effect MCQ (Single Correct)

The number of photo-electrons emitted per second from a metal surface increases when

A
The energy of incident photons increases
B
The frequency of incident light increases
C
The wavelength of the incident light increases
D
The intensity of the incident light increases

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The correct answer is:
D

Intensity ∝ ∝ (No. of photons) ∝ ∝ (No. of photoelectrons)

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