Saved Bookmarks
| 1. |
On dipping one end of a capiilary in liquid and inclining the capillary at an angles `30^(@)` and `60^(@)` with the vertical, the lengths of liquid columns in it are found to be `l_(1)` and `l_(2)` respectively. The ratio of `l_(1)` and `l_(2)` isA. `1:sqrt(3)`B. `1:sqrt(2)`C. `sqrt(2):1`D. `sqrt(3):1` |
|
Answer» Correct Answer - A `l_(1) = (h)/(cos alpha_(1))` and `l_(2) = (h)/(cos alpha_(2)) therefore (l_(1))/(l_(2)) = (cos alpha_(2))/(cos alpha_(1)) = (cos 60^(@))/(cos 30^(@)) = (1//2)/(sqrt(3)//2) = 1:sqrt(3)` |
|