Questions
Intensity of light incident on a photo sensitive surface is doubled. Then
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
detailed solution
Correct option is B
Intensity of incident light is directly proportional to number of photo electrons emitted. If intensity is doubled then the number of emitted electrons is doubledTalk to our academic expert!
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1.5 mW of 400 nm light is directed at a photoelectric cell. If 0.1 % of the incident photons produce photoelectrons, find the current (in A) in the cell.
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