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Photo-diodes work in _________

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in Biomedical Instrumentation by (76.6k points)
Photo-diodes work in _________

(a) forward biased

(b) reverse biased

(c) independent of forward and reverse biasing

(d) any configuration

The question was asked during a job interview.

My question is based upon Photoelectric Transducers in chapter Physiological Transducers of Biomedical Instrumentation

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The correct option is (b) reverse biased

To elaborate: The photodiode is a P-N junction semiconductor diode. It always operated in the reversed biased condition. The light is always focused through a glass lens on the junction of the photo diode.

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