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Write Einstein's photoelectric equation....

Write Einstein's photoelectric equation.

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Einstein.s photoelectric equation,
KE. of photoelectron = Incident energy of photons - Work function
or `K.E. = hv-W_(0)`
or `K.E. = hv - hv_(0)`
where `v_(0)` is called threshold frequency.
(i) Threshold Frequency : For a given metal, there exists a certain minimum frequency of the incident radiation below which no emission of photoelectrons takes place. This frequency is called threshold frequency.
(ii) Stopping Potential : It is that minimum negative potential given to anode in a photo-cell for which the photoelectric current becomes zero. It is denoted by `V_(0)`. It is independent of the intensity of the incident light.
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