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Q.

With  regard to  light emitting  diode  a process of emission of light is explained Identify  the wrong point

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a

When the forward current of diode  is small, the intensity  of light emitted is small

b

As the forward current increases, intensity  of light  increases and reaches maximum

c

Further increase  in the forward current results  in increase of  light intensity

d

Hence,  LED’s are biased  such that the light emitting  efficiency is maximum

answer is C.

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Detailed Solution

After  reaching the maximum, intensity of light will not increase any further.
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