The emission of electrons from a metal surface exposed rto light radaition of appropriate wavelength is called photoelectroic effect .The emmited electron are called photo=-weklectron work function of threshold energy may be defined as the minimum amount of energy required to ejercted electron from a most surface .According to Einstein
Maximum kinetic energy of ejected electron = Aborbed energy - Work function
`(1)/(2) mv_(max)^(2) = h(v) - h(v_(n)) = hv [(1)/(lambda) -0 (1)/(lambda_(n))]`
Where `v_(n)` and `lambda_(0)` are thereshold frequency and threshold wavelength respectively
Sopping potential : it is the miximum potential at which the photoelectric current becomes zero if `V_(0)` is the stopping potential `eV_(0) = h(v- v_(0))`
Which graph is correct ?

Options

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B.

C.

D.

Answer

C