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  • Two wires of copper having length in the ratio 4:1 and the ratio as 1:4 are stretched by the same force. The

Two wires of copper having length in the ratio 4:1 and the ratio as 1:4 are stretched by the same force. The ratio of longitudinal strain in the two will be-

Option: 1

1:16


Option: 2

16:1


Option: 3

1:64


Option: 4

64:1


Answers (1)

best_answer

Use, Strain α Stress α \frac{F}{A}

\begin{aligned} \text { Ratio of strain } & =\frac{A_2}{A_1}=\left(\frac{r_2}{r_1}\right)^2 \\ & =\left(\frac{4}{1}\right)^2=\frac{16}{1} \end{aligned}

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vishal kumar

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