Semiconductor Electronics Materials Devices and Simple Circuits - Result Question 33

33. 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: 33. (c)

Solution:

  1. (c) Electromotive force depends upon intensity of light falling, it does not depend on frequency of barrier voltage.