Question

If the liquid neither rises nor falls in capillary tube, then angle of contact is

Answer 1

90°

When a capillary tube is dipped into a liquid, the liquid neither rises nor falls in the capillary. When a capillary tube is dipped into a liquid, the liquid neither rises nor falls in the capillary. (a) The surface tension of the liquid must be zero. (b) The contact angle must be 90°

Answer 2

Answer:

90°

Explanation:

h= 2 sigma cos theta/r rho g

since cos90= 0 then h= 0