| Column $-I$ | Column $-II$ |
| $(a)$ Stress $\propto $ Strain | $(i)$ $M^1\,L^{-1}\,T^{-2}$ |
| $(b)$ Dimensional formula for compressibility | $(ii)$ $M^{-1}\,L^{1}\,T^{-2}$ |
| $(iii)$ Poisson’s ratio | |
| $(iv)$ Hooke’s law |

[Area of cross section of wire $=0.005 \mathrm{~cm}^2$, $\mathrm{Y}=2 \times 10^{11}\ \mathrm{Nm}^{-2}$ and $\left.\mathrm{g}=10 \mathrm{~ms}^{-2}\right]$

