In photo-electric effect, when photons of energy ′hv′ are incident on a metal surface, electrons are emitted with some kinetic energy. It is possible to say that
All ejected electrons have same K.E. equal to hv0
All ejected electrons have K.E. equal to hv
The ejected electrons have a distribution of K.E. from zero to hv−hv0
The most energetic electrons have K.E. equal to hv
A
The ejected electrons have a distribution of K.E. from zero to hv−hv0
B
The most energetic electrons have K.E. equal to hv
C
All ejected electrons have same K.E. equal to hv0
D
All ejected electrons have K.E. equal to hv
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Solution
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hv=hv0+K.E.for emitted electrons, its possible that they have a K.E from zero to hv−hv0. Hence correct option is B.
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