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Physics · 2024 · 1 mark
Ray Optics and Optical InstrumentsRefraction at Spherical Surfaces and by Lenses1 markUnderstandassertion reason
CBSE 2024 · Region 3 · Set 1 · Q16
Assertion (A): A convex lens, when immersed in a liquid, disappears. Reason ( R ): The refractive indices of material of the lens and the liquid are…
Assertion (A) : A convex lens, when immersed in a liquid, disappears. Reason ( $\displaystyle R$ ) : The refractive indices of material of the lens and the liquid are equal.
Official answer
(A)
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
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CBSE Class 12 Physics past-paper question from the 2024 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.