Question

Young's modulus is higher for which of the following?

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

Hint:

Order of Young's Modulus for common metals:
Steel ($200 \text{ GPa}$) > Copper ($110 \text{ GPa}$) > Brass ($100 \text{ GPa}$) > Aluminium ($70 \text{ GPa}$).
Higher Young's modulus means the material resists deformation more strongly.

Answer 1

The Correct Option is B

Step 1: Know what Young's modulus tells us.
Young's modulus measures stiffness. A higher value means the material resists stretching or compression more strongly.

Step 2: Compare common values.
Steel has a Young's modulus of about \(200 ext{ GPa}\), which is higher than copper, brass, and aluminium.

Step 3: Choose the stiffest material.
Among the given options, steel has the highest Young's modulus.
\[ oxed{ ext{Option 2: Steel}} \]