A. If both Assertion \& Reason are True \& the Reason is a correct explanation of the Assertion....

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A. If both Assertion \& Reason are True \& the Reason is a correct explanation of the Assertion.
B. If both Assertion \& Reason are True but Reason is not a correct explanation of the Assertion.
C. If Assertion is True but the Reason is False.
D. If both Assertion \& Reason are False.
If a parallel beam of white light falls on a transparent thin film, those wavelengths for which the path difference is \( \mathrm{n} \lambda \) will be absent from reflected light.

Reason :- There is an additional phase change of \( \pi \) at air-thin film interface for ray 1 .
- (1) A
(2) \( \mathrm{B} \)
(3) \( \mathrm{C} \)
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