Question

90.
The rise in the level of a liquid in a
tube is h. What will be the rise in the
level if a tube of length l = 1/2 is
used?
a) h
b) h/2
c) h/3
d) h/4​

Answer 1

Explanation:

The height h through which a liquid will rise in a capillary tube of inner radius r is given by

h=

rρg

2Scosθ

Where S is the surface tension, ρ is the density of the liquid and θ is the angle of contact.

We see that rise of the liquid in capillary tube depends upon the angle of contact and angle of contact is property of both solid and liquid.

Answer 2

Answer:

ans option d......................