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Physics · 2025 · 1 mark
CBSE 2025 · Region 4 · Set 1 · Q15
Assertion (A): In double slit experiment if one slit is closed, diffraction pattern due to the other slit will appear on the screen. Reason (R): For…
Assertion (A) : In double slit experiment if one slit is closed, diffraction pattern due to the other slit will appear on the screen. Reason $\displaystyle (R)$: For interference, at least two waves are required.
Official answer
(C)
Assertion (A) is true, but Reason (R) is false.
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CBSE Class 12 Physics past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.