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What should be the order of bandgap of an LED, if it is required to emit light in the visible range?

Class 12th Physics, Question -What should be the order of bandgap of an LED, if it is required to emit light in the visible range?

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February 15, 2023

Question 31:What should be the order of bandgap of an LED, if it is required
to emit light in the visible range?

The correct answer is -1.8 eV to 3 eV