Question

Assertion : The colour of light emitted by a LED depends on its forward biasing.
Reason : The reverse biasing of p-n junction will lower the width of depletion layer.
A. if both the Assertion and Reason are true and the Reason is the correct explanation of Assertion.
B. if both the Assertion and Reason are true but the reason in not a correct explanation of the Assertion.
C. if the Assertion is true but the Reason is false.
D. if both Assertion and Reason are false.

Answer 1

Correct Answer - D
The colour of light emitted by LED depends upon the nature of semiconductor material used in making the KED. Hence Assertion is wrong. Here, the reason is also wrong.