Photodiode is a device (a) in which photocurrent is dependent on reverse bias. (b) in which photocurrent is independent of incident radiation. (c) which is always operated in forward bias. (d) which is always operated in reverse bias.

Answer: (d). A photodiode is operated in reverse bias, where the small dark current changes greatly with light. Photocurrent depends on the intensity of incident light, nearly independent of the reverse voltage. So (a), (b), (c) are wrong; the answer is (d) always operated in reverse bias.

Photodiode is a device | MHT CET 2026 (15 Apr, Shift 1)

Q7MHT CET 2026 · 15 APR · SHIFT 1Easy

Special Purpose Diodes

Photodiode is a device

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Answer: (d)

A photodiode is operated in reverse bias, where the small dark current changes greatly with light.
Photocurrent depends on the intensity of incident light, nearly independent of the reverse voltage.
So (a), (b), (c) are wrong; the answer is (d) always operated in reverse bias.

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