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Physics · 2013
JEE Main · 9 April 2013, Shift 1 · Q28
If the ratio of lengths, radii and Young's moduli of steel and brass wires in the figure are a, b and c respectively, then the corresponding ratio of…
If the ratio of lengths, radii and Young's moduli of steel and brass wires in the figure are a, b and c respectively, then the corresponding ratio of increase in their lengths is :
Official answer
(3)
$\displaystyle \frac{3 a}{2 b^2 c}$
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JEE Main 2013 Physics question, with the answer from NTA’s final answer key. Where our answers come from.