Question

Figure shows a capillary tube C dipped in a liquid that wets it. The liquid rises to a point A. If we blow air through the horizontal tube H, what will happen to the liquid column in the capillary tube?

• A. Level will rise above A
• B. Level will fall below A
• C. Level will remain at A
• D. It is difficult to predict

Answer 1

The correct option is A

Level will rise above A

The air through the horizontal tube will decrease the pressure and more liquid will be pushed into the capillary tube.