The ratio of surface tensions of mercury and water is given to be 7.5 while the ratio of their densities is 13.6. Their contact angles, with glass, are close to 
and 
, respectively. It is observed that mercury gets depressed by an amount 
in a capillary tube of radius 
, while water rises by the same amount 
in a capillary tube of radius 
. The ratio, 
, is then close to:
Text Solution
Verified by ExpertsThe correct answer is:
B
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