Strain-stress curves of three wires of different materials are shown in figure. P, Q and R are elast

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8.Mechanical Properties of Solids

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The strain-stress curves of three wires of different materials are shown in the figure. $P, Q$ and $R$ are the elastic limits of the wires. The figure shows that

A

Elasticity of wire $P$ is maximum

B

Elasticity of wire $Q$ is maximum

C

Tensile strength of $ R$ is maximum

D

None of the above is true

Solution

(d) As stress is shown on $x-$axis and strain on $y-$axis

So we can say that $Y = \cot \theta = \frac{1}{{\tan \theta }} = \frac{1}{{{\rm{slope}}}}$

So elasticity of wire $P$ is minimum and of wire $R$ is maximum

Standard 11

Physics

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