When a glass plate is inserted vertically in water, water rises along the plate making its surface close to the plate curved as shown in figure. The height $h$  (in mm) to which water rises along the plate is. Given (surface tension of water is $\sigma =0.075N\text{/}m$ , density of water is  $\rho =1000kg/m^3$ and g = acceleration due to gravity $=10m/s^2,\sin \theta =0.2$ ).