Question

Which of the following materials is most elastic?

• A. Rubber
• B. Plastic
• C. Brass
• D. Steel

Answer 1

Answer:

D. Steel

Young's modulus is the ratio of stress (σ) to strain (ε), and it determines how much a material will deform under a given load. Steel is the most elastic material among the given options, as its Young's modulus (E) is greater than that of rubber, plastic, and brass. Steel has a smaller strain for a given stress compared to rubber, making it more elastic.