Question

The stress-strain curves for brass, steel and rubber are shown in the figure. The lines A, B and C are for

• A. Rubber, brass and steel respectively
• B. Brass, steel and rubber
• C. Steel, brass and rubber respectively
• D. Steel, rubber and brass

Answer 1

Answer: (C)

Steel, brass and rubber respectively

Answer 2

From the graph $\tan\theta_{C} < \tan\theta_{B} < \tan\theta_{A}$

⇒ $Y_{C} < Y_{B} < Y_{A}$ $\therefore Y_{\text{Rubber }} < Y_{\text{Brass}} < Y_{\text{Steel}}$