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Optoelectronics & Transistors (Q-051 to Q-075)

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  1. 1.

    A photodiode is operated in: -

  2. 2.

    A solar cell operates in: -

  3. 3.

    In an npn transistor in active mode, which junction is forward biased? -

  4. 4.

    If I_C = 9.9 mA and I_B = 0.1 mA, then beta is: -

  5. 5.

    An LED emits light at 550 nm. The band gap is approximately: -

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