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

a)

The voltage applied at the  junction

b)

The barrier voltage at the  junction

c)

The intensity of the light falling on the cell

d)

The frequency of the light falling on the cell



Question ID - 151040 | SaraNextGen Top Answer

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

a)

The voltage applied at the  junction

b)

The barrier voltage at the  junction

c)

The intensity of the light falling on the cell

d)

The frequency of the light falling on the cell

1 Answer
127 votes
Answer Key / Explanation : (c) -

(c)

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 depend upon no. of photons. So photo  or current is proportional to intensity of light

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