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The light emitting diode (LED),...

The light emitting diode (LED),

A

is made from the semiconducting compound gallium arsenide phosphide

B

emit light when forward biased

C

is made from one of the two basic semiconducting materials, silicon or germanium

D

emit light when reverse biased.

Text Solution

Verified by Experts

The correct Answer is:
A, B
The light emitting diode (LED) is made from gallium arsenide phosphide which has the property of emitting light (due to the recombination of electrons and holes) when forward biased.
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PRADEEP-ELECTRONIC DEVICES-Exercise
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  6. In boolean algebra, if A=1 and B=0 then the value of A+barB is

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  7. A piece of pure semiconductor of silicn of size 1cm xx 1 cm xx 1 mm is...

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  8. A piece of pure semiconductor of silicn of size 1cm xx 1 cm xx 1 mm is...

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  9. A piece of pure semiconductor of silicn of size 1cm xx 1 cm xx 1 mm is...

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  10. A piece of pure semiconductor of silicn of size 1cm xx 1 cm xx 1 mm is...

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  11. When a p-type semiconductor is brought into a close contact with n-typ...

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  12. When a p-type semiconductor is brought into a close contact with n-typ...

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  13. A PN junction diode when forward biased has a drop of 0.5 V which is a...

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  14. The diode used in the circuit shown in the figure has a constant volta...

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  15. For a transistor connected in common emitter mode, the voltage drop ac...

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  16. In a common emitter amplifier the load resistance of the output circui...

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  17. The number desnity of donor atoms which have to be added to an intrins...

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