CBSE 2023 · Region 1 · Set 3 · Q15 · 1 mark
The correct graph showing the variation of the resistance $\displaystyle (R)$ of a cylindrical metal wire as a function of its radius ( $\displaystyle r$ ), keeping its length and temperature constant, is :
Official answer
From CBSE’s own marking scheme for this paper.
(C)
Current ElectricityResistivity of Various MaterialsUnderstandmcqeasy
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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.