The number of photo electrons emitted for light of a frequency v (higher than the threshold frequency v₀) is proportional to (a) threshold frequency (v₀) (b) intensity of light (c) frequency of light (v₀) (d) v - v₀

Answer: (b). One photon ejects one electron, so number of photoelectrons ∝ photons per second. At fixed frequency, photons per second ∝ intensity. So the answer is (b) intensity of light.

The number of photo electrons emitted for light of a frequency v… | NEET 2009 (AIPMT)

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Photoelectric Experiment: Intensity, Stopping Potential & Graphs

The number of photo electrons emitted for light of a frequency $v$ (higher than the threshold frequency $v_0$ ) is proportional to

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Answer: (b)

One photon ejects one electron, so number of photoelectrons $\propto$ photons per second.
At fixed frequency, photons per second $\propto$ intensity.
So the answer is (b) intensity of light.

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