Question

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

Answer 1

The correct option is D None of the above is true

d):As stress is shown on x-axis and strain on y-axis
So we can say that Y=cot $\theta =\frac{1}{tan\theta }=\frac{1}{slope}$
So elasticity of wire P is minimum and of wire R is maximum