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Photoconductive transducers produce output ________

(a) due to change in inductance

(b) due to change in  light

(c) due to change in resistance

(d) due to change in temperature

I had been asked this question during a job interview.

Enquiry is from Photoelectric Transducers in section Transducers of Electrical Measurements

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Correct option is (c) due to change in resistance

The explanation is: A photoconductive transducer produces an output due to a change in the resistance. Electrical output is produced due to a variation in the temperature.

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