The table below shows some data on two wires P and Q.
| Wire | Young modulus of material / GPa\text{GPa}GPa | Cross-sectional area of wire / mm2\text{mm}^2mm2 |
|---|---|---|
| P | 110 | 1.2 |
| Q | 180 | 2.2 |
The wires P and Q have the same original length. The tension in each wire is the same. Both wires obey Hooke's law.
What is the value of the ratio extension of Pextension of Q\displaystyle \frac{\text{extension of P}}{\text{extension of Q}}extension of Qextension of P?
0.33
1.5
3.0
4.5
