Physics · 2022
JEE Main · 29 July 2022, Shift 2 · Q34
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Alloys such as constantan and…
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.Assertion A: Alloys such as constantan and manganin are used in making standard resistance coils.
Reason R: Constantan and manganin have very small value of temperature coefficient of resistance.In the light of the above statements, choose the correct answer from the options given below.
Official answer
(1)
Both $\displaystyle \mathbf{A}$ and $\displaystyle \mathbf{R}$ are true and $\displaystyle \mathbf{R}$ is the correct explanation of $\displaystyle \mathbf{A}$.
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JEE Main 2022 Physics question, with the answer from NTA’s final answer key. Where our answers come from.