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Photo diode .

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Photo diode .

    • Posted by Kriti Sharma 5 years, 11 months ago

    CBSE > Class 12 > Physics
    • 2 answers

    Anshu Dwivedi 5 years, 11 months ago

    It is connected in reverse bised . It is mainly used to detecting of optical signal. And it increase depletion layer.

    1Thank You

    Pradeep Poonia 5 years, 11 months ago

    It is connected in forward bias. When light falls on depletion layer, the neutral atoms in depletion layer breaks in hole+electron, holes move towards negetive and electrons move towards positive terminal. Hence current starts flowing. It is used in burgler alarm, note counting etc.

    1Thank You

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