CBSE 2023 · Region 5 · Set 1 · Q16 · 1 mark
Assertion (A) : The resistance of an intrinsic semiconductor decreases with increase in its temperature.
Reason (R): The number of conduction electrons as well as hole increase in an intrinsic semiconductor with rise in its temperature.
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 CircuitsIntrinsic SemiconductorUnderstandassertion_reasonmedium
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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.