Question

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 $I_{1}, I_{2}, I_{3}$ and $I_{4}$ are drawn as follows.

Greatest intensity is

• A. $I_{1}$
• B. $I_{2}$
• C. $I_{3}$
• D. $I_{4}$

Answer 1

Answer: (D)

When intensity is increased, reverse saturation current also increases.

$I-V$ characteristics of a photodiode for different illumination intensity $I_{4}>I_{3}>I_{2}>I_{1}$.