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Q.

Which one of the following statement is not correct in the case of light emitting diodes? 
A. It is a heavily doped p-n junction. 
B. It emits light only when it is forward biased. 
C. It emits light only when it is reverse biased. 
D. The energy of the light emitted is equal to or slightly less than the energy gap of the semiconductor used. 
Choose the correct answer from the options give below:

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a

C

b

B

c

A

d

C and D

answer is A.

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Detailed Solution

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LED is not used in reverse bias. So, statement (c) is not correct.

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