Question

Figure shows a capillary rise H. If air is blown through the horizontal tube as shown, then rise in capillary tube will be: 

• A. \( =H \)
• B. \( >H \)
• C. \(
• D. zero

Hint:

Higher fluid speed implies lower pressure (Bernoulli’s principle).

Answer 1

The Correct Option is B

Step 1: Blowing air increases velocity of air above liquid.
Step 2: By Bernoulli’s principle, pressure above liquid decreases.
Step 3: Lower pressure causes greater capillary rise.