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Explain giving reasons for the following...

Explain giving reasons for the following :
(a) Photoelectric current in a photocell increases with the increases in intensity of the incident radiation.
(b) The stopping potential `(V_0)` varries linearly with the frequency (v) of the incident radiation for a given photosenstive surface with the stop remaining the same for different surfaces.
(c) Maximum kinetic energy of the photoelectrons is independent of the intensity of incident radiation.

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Explain giving reasons for the following : (a) Photoelectric current in a photocell increases with the increase in intensity of the incident radiation. (b) The stopping potential V_0 varies linearly with the frequency nu of the incident radiation for a given photosensitive surface with the slope remaining the same for different surfaces. (c) Maximum kinetic energy of the photoelectrons is independent of the intensity of incident radiation.

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