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Photoelectric effect When light of suffi...

Photoelectric effect
When light of sufficiently small wavelength is incident on a metal cathode, it may emit electsons called photoelectrons. This is called photoelectric effect. Above threshold frequency, the stopping potential and hence the energy of the photoelectrons is directly proportional to the frequency. In the given figure, we see the variation of stopping potential with the frquencfy of incident radiation for three metals A, B and C

The equation of the graph is

A

`eV_0=hlambda-W`

B

`eV_0=h/v_W`

C

`eV_0=(h)/(v)-(W)/c`

D

`eV_0=hv-W`

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