By increasing the intensity of incident light keeping frequency $v > v_{0}$ fixed on the surface of metal

kinetic energy of the photoelectrons increase

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number of emitted electrons increases

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kinetic energy and number of electrons increases

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no effect

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Solution

The correct option is D no effect
The number of photo electrons emitted per second from a photosensitive plate is directly proportional to the intensity of the incident radiation. ... For the same frequency of light and increased intensity, the saturation current is found to increase, but the cut-off potential is found to remain constant.
The number of electrons also changes because of the probability that each photon results in an emitted electron are a function of photon energy. If the intensity of the incident radiation of a given frequency is increased, there is no effect on the kinetic energy of each photo electron

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By increasing the intensity of incident light keeping frequency v>v0 fixed on the surface of metal

By increasing the intensity of incident light keeping frequency $v > v_{0}$ fixed on the surface of metal