Two narrow tube of diameters ' 
' and ' 
' are joined together to form a 
tube open at both ends. If 
tube contains water, the difference in water levels in the limbs is ( 
is the surface tension of water, angle of contact 
zero and density of water 
, 
acceleration due to gravity)
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
Let 
and 
be the heights to which water rises in the first second tubes respectively.
The difference between the levels of water in the two tube as calculated as;
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