Question

Which of the following has the maximum Young’s modulus value?

• A. Aluminium
• B. Copper
• C. Brass
• D. Steel
• E. Iron (Wrought)

Hint:

Young’s modulus determines how resistant a material is to deformation under stress.

Answer 1

The Correct Option is D

Step 1: Young’s modulus ($Y$) measures the stiffness of a material and is defined as: \[ Y = \frac{{Stress}}{{Strain}} \] 
Step 2: The values of Young’s modulus for common metals are: 
Aluminium: $70 \times 10^9$ Pa 
Copper: $110 \times 10^9$ Pa 
Brass: $100 \times 10^9$ Pa 
Steel: $200 \times 10^9$ Pa 
Wrought Iron: $190 \times 10^9$ Pa 
Step 3: Since steel has the highest Young’s modulus, it is the stiffest material among the given options. 
Step 4: Therefore, the correct answer is (D). \bigskip