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Question
Choose the correct answer from given options
The wavelength and intensity of light emitted by a LED depend upon
Options
forward bias and energy gap of the semiconductor
energy gap of the semiconductor and reverse bias
energy gap only
forward bias only
Solution
The wavelength and intensity of light emitted by an LED depends on both energy gap and bias of the diode. Only when the diode is forward biased, it emits photons. The wavelength of the emitted light depends on the enegy gap of the semiconductor.
Hence, the correct answer is forward bias and energy gap of the semiconductor.
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