
| Column - $\mathrm{I}$ | Column - $\mathrm{II}$ |
| $(a)$Rain drops moves downwards with constant velocity. | $(i)$ Viscous liquids |
| $(b)$ Floating clouds at a height in air. | $(ii)$ Viscosity |
| $(iiii)$ Less density |
( $g$ $ =$ acceleration due to gravity $= 10$ $ ms^{^{-2}} )$


$A$ and $B$ are on the axis of tube $............\,Pa$
