Q. Which of the following substances has highest value of Young’s modulus?
Mechanical Properties of Solids
Solution:
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.
| Substance | Young’s modulus $10^9\, N\, m^{-2}$ |
|---|---|
| Aluminium | 70 |
| Copper | 120 |
| Iron | 190 |
| Steel | 200 |