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

  • question_answer
    During recombination at the junction, emitted photons have:

    A) energy greater than the band gap.

    B) energy equal to or slightly less than the band gap.

    C) energy which has no relation with the band gap.

    D) very low energy compared to band gap.  

    Correct Answer: B

    Solution :

    Option [b] is correct. Explanation: On recombination, the energy is released in the form of photons. Photons with energy equal to or slightly less than the band gap are emitted.


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