When photons of energy hv are incident on the surface of a photosensitive material of work function hvo , then
The K.E of all emitted elections is hv0
The K.E of all emitted electrons is h(v−v0)
The K.E of all emitted electrons is hv .
The K.E of fastest electrons is h(v−v0)
A
The K.E of all emitted elections is hv0
B
The K.E of all emitted electrons is h(v−v0)
C
The K.E of fastest electrons is h(v−v0)
D
The K.E of all emitted electrons is hv .
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Solution
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Maximum kinetic energy = energy of photon - work function K.E. of fastest electron =hν−hν0 =h(ν−ν0)
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