JEE Main 2022 Physics question

Not in JEE Advanced syllabus

The photodiode is used to detect the optical signals. These diodes are preferably operated in reverse biased mode because :

(1)fractional change in majority carriers produce higher forward bias current
(2)fractional change in majority carriers produce higher reverse bias current
(3)fractional change in minority carriers produce higher forward bias current
(4)fractional change in minority carriers produce higher reverse bias currentCorrect

Answer: (4)

Solution

A photodiode is reverse biased. When light falls on it, the fractional change in the number of minority carriers is

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Question ID VK-024940