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The wavelength of light emitted by GaAs laser is 8670 x 10-10 m. If h = 6.626 x 10-34 Js, velocity of light = 3 x 108 m/s and eV = 1.602 x 10-19 J, the energy gap in GaAs is | |
A. | 0.18 eV [Wrong Answer] |
B. | 0.7 eV [Wrong Answer] |
C. | 1.43 eV [Correct Answer] |
D. | 2.39 eV [Wrong Answer] |
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