Q.

A photodiode in reverse biased is irradiated with light of suitable frequency and current in circuit is measured.

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Characteristics of diode for different illumination intensities I1, I2, I3 and I4 are drawn as follows. Correct intensity order is :

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a

I2 > I1 > I3 > I4

b

I3 > I1 > I2 > I4

c

I4 > I3 > I2 > I1

d

I1 > I2 > I3 > I4

answer is D.

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Detailed Solution

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For increasing intensity of light currents in reverse bias increase

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A photodiode in reverse biased is irradiated with light of suitable frequency and current in circuit is measured.Characteristics of diode for different illumination intensities I1, I2, I3 and I4 are drawn as follows. Correct intensity order is :