Gujarati
Hindi
8.Mechanical Properties of Solids
easy

The Young's modulus of a wire is $y$. If the energy per unit volume is $E$, then the strain will be

A

$\sqrt {\frac{{2E}}{y}} $

B

$E\sqrt {2y} $

C

$Ey$

D

$\frac{E}{y}$

Solution

$E = \frac{1}{2}\,y\,{{\rm{(strain)}}^2}$

strain $ = \sqrt {\frac{{2E}}{y}} $

Standard 11
Physics

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