CBSE 2023 · Region 2 · Set 1 · Q18 · 1 mark
Assertion (A) : In Young's double slit experiment all fringes are of equal width.
Reason (R) : The fringe width depends upon wavelength of light ( $\displaystyle \lambda$ ) used, distance of screen from plane of slits (D) and slits separation (d).
Official answer
From CBSE’s own marking scheme for this paper.
(A)
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
Wave OpticsInterference of Light Waves and Young’s ExperimentAnalyseassertion_reasoneasy
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CBSE Class 12 Physics past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.