The flow type is determined using the Reynolds number formula:
\( Re = \frac{\rho v D}{\mu} \)
Given \( D = 20 \, \text{cm}, \, v = 1.5 \, \text{L/sec}, \) and kinematic viscosity \( \nu = 2.25 \, \text{Stokes}, \) the calculated Reynolds number is below 2000, indicating laminar flow.
$XY$ is the membrane / partition between two chambers 1 and 2 containing sugar solutions of concentration $\mathrm{c}_{1}$ and $\mathrm{c}_{2}\left(\mathrm{c}_{1}>\mathrm{c}_{2}\right) \mathrm{mol} \mathrm{L}^{-1}$. For the reverse osmosis to take place identify the correct condition} (Here $\mathrm{p}_{1}$ and $\mathrm{p}_{2}$ are pressures applied on chamber 1 and 2 )