Identify the correct circuit diagrams for the normal operation from the following.
Identify the correct circuit diagrams for the normal operation from the following.

- (A), (B)
- (B), (C)
- $(\mathrm{A}),(\mathrm{C})$
- (B), (D)
Solution
Option (B) is photodiode and option (D) is LED with reverse and forward biasing respectively. Therefore both will operate properly.
Asked in: MHT CET 2023 (11 May Shift 1)
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