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Questions  

In the given arrangement, two capillaries of glass having radii r and 2r  are dipped in pure water of density ρ, the surface tension of water is 

a
2ρhgr
b
ρhgr
c
ρhgr2
d
None of these

detailed solution

Correct option is B

P0−2Tr+ρgh=P0−2T2r ⇒T=ρghr

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