The number of photoelectrons emitted for...

The number of photoelectrons emitted for light of a frequency `v` (higher than the threshold frequency `V_(0)`) is proportional to

`v-v_(0)`

threshold frequency `v_(0)`

intensity of light

frequency of light `v`

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The number of photoelectrons emitted per unit time depends on (v gt v_(0))

The kinetic energy of electrons ejected by using light having frequency equal to threshold frequency (v_(0)) is:

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Photoelectric emission is observed from a metallic surface for frequencies v_(1) and v_(2) of the incident light. If the maximum value of kinetic energies of the photoelectrons emitted in the two cases are in the ratio n:1 then the threshold frequency of the metallic surface is

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Photoelectric emission is observed from a surface for frequencies v_(1) and v_(2) of incident radiations (v_(1) gt v_(2)) . If the maximum kinetic energy of photoelectrons in the two cases are in the ratio of 2 : 1 then threshold frequency v_(0) is given by.

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