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A capillary tube of radius 0.20 mm is di...

A capillary tube of radius 0.20 mm is dipped verticaly in water. Find the height of the water column raised in the tube. Surface tensionn of water `=0.075Nm^-1` and density of water `=1000 kgm^-3. Take g=10 ms^-2`.

A

`7.5cm`

B

`6cm`

C

`5cm`

D

`3cm`

Text Solution

Verified by Experts

The correct Answer is:
A
We have,
`h=(2Scos theta)/(r rho g)=(2xx0.075 N//mxx1)/((0.20xx10^(-3)m))`
`xx(1000 kg//m^(3))(10m//s^(2))`
`=0.075 m= 7.5 cm`
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