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JEE PHYSICS MCQ: SEMI CONDUCTOR DEVICES
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For LED’s to emit light in visible region of electromagnetic light, it should have energy band gap in the range of:
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Correct option: D
1.7 eV to 3.0 eV
Option D (1.7 eV to 3.0 eV) is correct because this range corresponds to the energy of photons in the visible light spectrum.
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