CBSE 2023 · Region 5 · Set 2 · Q16 · 1 mark
Assertion (A) : In insulators, the forbidden gap is very large.
Reason (R) : The valence electrons in an atom of an insulator are very tightly bound to the nucleus.
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).
Semiconductor Electronics: Materials, Devices and Simple CircuitsClassification of Metals, Conductors and SemiconductorsUnderstandassertion_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.