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When an open circuited pn junction is illuminated then _________________(a) resistance increases(b) there is no effect(c) electron hole pairs are formed(d) capacitance increasesI got this question in an online quiz.Question is from Photoelectric Transducers topic in division Transducers of Electrical Measurements

Answer»

Right OPTION is (c) electron hole pairs are formed

For explanation: Upon illumination of an open circuited PN junction, electron hole pairs are generated. A small voltage appears across the junction and as a result it ACTS as a voltae source.



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