Light of wavelength 4000 Å is incident on a metal plate whose work function is 2eV. What is maximum kinetic energy of emitted photoelectron ?
Text Solution
Verified by ExpertsThe correct answer is:
B
If the maximum kinetic energy of photo electrons emitted from metal surface is 
and 
is the work-function of metal then
where 
is the energy of photon absorbed by the electron in metal.
where 
Putting the numerical values, we have
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