Questions
In a p-n junction photocell, the value of the photo electromotive force produced by monochromatic light is proportional to
a
the barrier voltage at the p-n junction
b
the intensity of the light falling on the cell
c
the frequency of the light falling on the cell
d
the voltage applied at the p-n junction
detailed solution
Correct option is B
When a light (wavelength sufficient to break the covalent bond) falls on the junction, new hole-electron pairs are created. No. of produced electron-hole pairs depends upon no. of photons . So photo-emf or current is proportional to intensity of light.Talk to our academic expert!
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