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In a p-n junction photo cell, the value ...

In a `p-n` junction photo cell, the value of the photo electromotive force produced by monochromatic light is proportional to

A

the voltage applied at p-n junction

B

the barrier voltage at p-n junction

C

the intensity of light falling on cell

D

the frequency of light falling on cell

Text Solution

Verified by Experts

The correct Answer is:
C
When a light (wavelength sufficient to break the covalent bond) falls on the junction. New hole electron pairs are created. Number of produced electron hole pair depend upon number of photons. So, photoemf or current proportional to intensity of light.
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