In a forward biased photodiode with increase in incident

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In a forward biased photodiode with increase in incident light intensity, the diode current—

1. Increases
2. Remains constant
3. Decreases
4. Remaining constant, the voltage drop across the diode increases

Correct Option: C

In a forward biased photodiode with increase in incident light intensity, the diode current decreases.
Description: Figure given below shows the optical generation of carriers in a forward biased p-n junction photodiode
The diode current is given by relation

I=I_th		ηV		- I_{op ....(A)}
		_eKT – 1

and Iop = q Agop (Lp + Ln + W)
where, gop = optical generation rate
Thus from equation (A) it is clear that increase in incident light intensity the optical generation rate will increase and the net diode current will decrease.