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Question

LED glows even when a ______ electric current passes through it. Fill in the blank.


A
weak
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B
strong
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C
can't predicted
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D
none of the above
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Solution

The correct option is A weak
Principle of LED is the reverse of principle of photo electric effect.
hence even when a weak electric current passes through a circuit respective number of some light photons releases from the LED.
Hence LED glows but with low intensity.

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