Physics · 2023
JEE Main · 15 April 2023, Shift 1 · Q34
A wire of length 'L' and radius 'r' is clamped rigidly at one end. When the other end of the wire is pulled by a force f, its length increases by ' l…
A wire of length 'L' and radius 'r' is clamped rigidly at one end. When the other end of the wire is pulled by a force $\displaystyle f$, its length increases by ' $\displaystyle l$ '. Another wire of same material of length ' $\displaystyle 2$ L ' and radius ' $\displaystyle 2 r$ ' is pulled by a force ' $\displaystyle 2 f$ '. Then the increase in its length will be :
Official answer
From NTA’s final answer key for this paper.
(1)
$\displaystyle l$
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JEE Main 2023 Physics question, with the answer from NTA’s final answer key. Where our answers come from.