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A glass rod of diameter d=2mm is inserte...

A glass rod of diameter `d=2mm` is inserted symmetrically into a glass capillary tube of radius `r=2mm`. Then the whole arrangement is vertically dipped into liquid having surface tension 0.072 Nm. The height to which liquid will rise on capillary is (Take `g=10(m)/(s^(2))`, `"density"_("liq")=1000(kg)/(m^(3)))`. Assume contact angle to be zero, capillary tube to be long enough

A

1.44 cm

B

6 cm

C

4.86 cm

D

5.26 cm

Text Solution

Verified by Experts

The correct Answer is:
A
`2pi(R+r)T=pi(R^(2)-r^(2))hgrho`
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