Which of the following p-n junction devices i | vedclass

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(D) $p-n$ junction diode operates in forward bias when it emits light,as in the case of an $LED$. $A$ solar cell converts light energy into electrical

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Both $(a)$ and $(b)$

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(D) $p-n$ junction diode operates in forward bias when it emits light,as in the case of an $LED$. $A$ solar cell converts light energy into electrical energy and operates under zero bias or in the photovoltaic mode,not in reverse bias. $A$ Zener diode is specifically designed to operate in the reverse breakdown region (reverse bias). Therefore,both $LED$ and solar cells are not used in reverse bias for their primary functions. Thus,the correct option is $(d)$.

Which of the following $p-n$ junction devices is not used in reverse bias?

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