Direction for: In each of the following questions a statement of Assertion is given followed by a corresponding statement of Reason just below it. Of the statements mark the correct answer as
Assertion: Photoelectric effect demonstrates the wave nature of light. Reason: The number of photoelectrons is proportional to the frequency of light.A) If both assertion and reason are true and reason is the correct explanation of assertion
B) If both assertion and reason are true but reason is not the correct explanation of assertion
C) If assertion is true but reason is false
D) If both assertion and reason are false
Correct Answer: D
Solution :
Wave nature of light cannot explain the photoelectric effect. Photoelectric effect is based upon quantum theory of light or particle nature of light. The number of photoelectrons emitted is proportional to intensity of incident light. It does not depend on frequency of light.
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