Intensity of light incident on a photo sensitive surface is doubled. Then
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a
the number of emitted electrons is trebled
b
the number of emitted electrons is doubled
c
the K.E. of emitted electrons is doubled
d
the momentum of emitted electrons is doubled
answer is B.
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Detailed Solution
Intensity of incident light is directly proportional to number of photo electrons emitted. If intensity is doubled then the number of emitted electrons is doubled