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Q.

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

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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

answer is C.

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Detailed Solution

As stress is shown on X-axis and strain on Y-axis. So,we can say that y=cot⁡θ=1tan⁡θ=1 slope So, elasticity of wire P is minimum and of wire R is maximum

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