The number of photo electrons emitted for light of a frequency v (higher than the threshold frequency $V_{0}$ ) is proportional to : -

Frequency of light (v)

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v - v_{o}

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Threshold frequency

(v_{o})

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Intensity of light

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Solution

The correct option is D Intensity of light
The number of photo electrons emitted is directly proportional to the intensity of light. Thus, with change in photo electrons emitted the intensity of light changes.

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