Question

Which of the following substances has highest value of Young’s modulus?

• A. Aluminium
• B. Iron
• C. Copper
• D. Steel

Answer 1

Answer: (D)

Substance	Young’s modulus $10^{9}N{m}^{-2}$
Aluminium	70
Copper	120
Iron	190
Steel	200

From the table, it is clear that among the given substances steel has the highest value of Young’s modulus.