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12th Class Physics Semiconducting Devices Question Bank C. B. (MCQs) - Semiconductor Electronics: Materials, Devices and Simple Circuits

  • question_answer
    Threshold voltage of LED is:

    A) lower compared to other p-n junction diodes and slightly different for each colour.

    B) higher compared to other p-n junction diodes and slightly different for each colour.

    C) higher compared to other p-n junction diodes and same for all colours.

    D) lower compared to other p-n junction diodes and same for all colours.

    Correct Answer: B

    Solution :

    Option [b] is correct. Explanation: The V-I characteristics of a LED is similar to that of a Si junction diode. But the threshold voltages are much higher and slightly different for each colour.


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