Question

Figure shows a capillary rise H. If the air is blown through the horizontal tube in the direction as shown then rise in capillary tube will be (a) = H (b) > H (c) < H (d) zero

Answer 1

Answer:

If air is blown then by using Bernoulli equation we can conclude as the air is blown the pressure over capillary will reduce

and P 0=P+ρgH,where P is the pressure in horizontal tube, now as air is blown , P will decrease H will increase because P0 is constant (atmospheric pressure)