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Water rises in a capillary tube to a cer...

Water rises in a capillary tube to a certain height such that the upward force due to surface tension is balanced by ` 75 xx 10 ^(-4) `N force due to the weight of the liquid. If the surface tension of water is ` 6 xx 10 ^( -2) Nm^(-1) ` the inner circumference of the capillary must be: (angle of contact is zero)

A

`12.5xx10^(-2)m`

B

`6.5xx10^(-2)m`

C

`0.5xx10^(-2)m`

D

`1.25xx10^(-2)m`

Text Solution

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The correct Answer is:
A
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ALLEN-ELASTICITY, SURFACE TENSION AND FLUID MECHANICS-Exercise 2 (One or more than one correct answer)
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