Identify the correct circuit diagrams for the | vedclass

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(D) photodiode is operated under reverse bias conditions. In circuit $(B)$,the $p$-side is connected to the negative terminal and the $n$-side to the

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$(B), (D)$

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(D) photodiode is operated under reverse bias conditions. In circuit $(B)$,the $p$-side is connected to the negative terminal and the $n$-side to the positive terminal,which is reverse bias. Thus,$(B)$ is correct for a photodiode.An $LED$ (Light Emitting Diode) is operated under forward bias conditions. In circuit $(D)$,the $p$-side is connected to the positive terminal and the $n$-side to the negative terminal,which is forward bias. Thus,$(D)$ is correct for an $LED$.Therefore,the correct circuit diagrams for normal operation are $(B)$ and $(D)$.

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

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