Semiconductor Electronics Materials Devices And Simple Circuits Ques 40
40. In a $p-n$ junction photocell, the value of the photo-electromotive force produced by monochromatic light is proportional to [2004]
(a) the voltage applied at the $p-n$ junction
(b) the barrier voltage at the $p-n$ junction
(c) the intensity of the light falling on the cell
(d) the frequency of the light falling on the cell
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Answer:
Correct Answer: 40.(c)
Solution:
- (c) Electromotive force depends upon intensity of light falling, it does not depend on frequency of barrier voltage.
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