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Light Emitting Diode

The colour of...

Question

The colour of light emitted by an LED depends on

A

Its reverse bias

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B

The amount of forward current

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C

Its forward bias

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D

Type of semiconductor material

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Solution

The correct option is D Type of semiconductor material
The colour of LED depends on the band gap of the semiconductor material used. When there is an electron transition, the light corresponding to that energy is emitted.

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