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=cotθ=1tanθ=1 slope So, elasticity of wire P is minimum and of wire R is maximum