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STD 11- 8. mechanical properties of solids — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11- 8. mechanical properties of solids4 Marks
Question
Two wires $A$ and $B$ of same length, same area of cross-section having the same Young's modulus are heated to the same range of temperature. If the coefficient of linear expansion of $A$ is $3/2$ times of that of wire $B$. The ratio of the forces produced in two wires will be
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Answer

(d) $F = YA\alpha \Delta \theta $

If $Y, A$ and $\Delta \theta$ are constant then $\frac{{{F_A}}}{{{F_B}}} = \frac{{{\alpha _A}}}{{{\alpha _B}}} = \frac{3}{2}$

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