JEE Mains · Physics · STD 12 - Semicondutor electronics
- JEE Mains 2023
- Medium
- MCQ
Given below are two statements : one is labeled as Assertion \(A\) and the other is labeled as Reason \(R\) Assertion \(A:\) Photodiodes are used in forward bias usually for measuring the light intensity. Reason \(R:\) For a \(p-n\) junction diode, at applied voltage \(V\) the current in the forward bias is more than the current in the reverse bias for \(\left|V_z\right| > \pm V \geq\left|V_0\right|\) where \(V_0\) is the threshold voltage and \(V _{ z }\) is the breakdown voltage. In the light of the above statements, choose the correct answer from the options given below
Pick an option to check your answer.
Answer & Solution
Correct Answer
(C) \(A\) is false but \(R\) is true
Step-by-step Solution
Detailed explanation
Theory based Photodiodes are operated in reverse bias condition. For \(P - N\) junction current in forward bias (for \(\left.V \geq V_0\right)\) is always greater than current in reverse bias \(\left(\right.\) for \(V \leq V _{ z }\) ) Hence Assertion if false but Reason is true
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