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Electrical engineering material miscellaneous

Electrical Engineering materials

  1. Consider the following statements:
    The energy band gap of GaAs
    1. is indirect.
    2. is direct.
    3. is 1.43 eV.
    4. corresponds to wavelength of 0·89 µm.
    (Given h = 6.63 × 10– 34 joule-sec)
    Of these the correct statements is/are:
    1. 1 alone
    2. 2, 3 and 4
    3. 2 and 3
    4. 1 and 4
Correct Option: B

NA



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