For emission of light, a light emitting diode (LED) is (a) always used in reverse biased condition (b) never used in forward or reserve biased condition (c) used both in forward and reverse biased condition depending upon its application (d) always used in forward biased condition

Answer: (d). Light is produced by electron-hole recombination at the junction. Carriers are injected across the junction only in forward bias. So the answer is (d) always used in forward biased condition.

For emission of light, a light emitting diode (LED) is | MHT CET 2023 (14 May, Shift 1)

Q39MHT CET 2023 · 14 MAY · SHIFT 1Easy

Special Purpose Diodes

For emission of light, a light emitting diode (LED) is

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Answer: (d)

Light is produced by electron-hole recombination at the junction.
Carriers are injected across the junction only in forward bias.
So the answer is (d) always used in forward biased condition.

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