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Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Photodiodes are preferably operated in reverse bias condition for light intensity measurement.
Reason R: The current in the forward bias is more than the current in the reverse bias for a p – n junction diode.
In the light of the above statements, choose the correct answer from the options given below:
- Both A and R are true and R is the correct explanation of A
- A is false but R is true
- A is true but R is false
- Both A and R are true but R is NOT the correct explanation of A
Correct answer: Both A and R are true but R is NOT the correct explanation of A
Solution
Photodiodes are indeed operated in reverse bias to enhance their sensitivity to light, allowing for more accurate measurements of light intensity. However, the reason provided about forward bias current being greater than reverse bias current does not directly explain why reverse bias is preferred for photodiodes.
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