CBSE Class 12-science Answered
Velocity of emitted electrons depend upon their Kinetic energy as given by
K.E. = ½ mv2 or v =?(2KE/m).
But the K.E. of electrons are independent of the intensity of incident light.
If intensity is increased photo current will increase that means number of electrons ejected will increase.
This increase in photo current will be directly proportional to the intensity of the incident light.
But the incident light must be above the threshold frequency for the given material otherwise no electrons will be emitted however strong will be the intensity of the incident light.
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