A capillary tube made of glass of radius 
is dipped vertically in a beaker filled with methylene iodide (surface tension 
, density 
) which rises to height 
in the tube. It is observed that the two tangents drawn from liquid-glass interfaces (from opp. sides of the capillary) make an angle of 
with one another. Then 
is close to 
.
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Given,
Angle of 
Surface tension, 
Radius of capillary tube, 
Density of methylene iodide, 
Capillary rise, 
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