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Water rises upto a height h in a capilla...

Water rises upto a height h in a capillary tube of radius r. What is the network done in this process if the density of water is `rho` ?

A

`(pir^(2)h^(2)rhog)/2`

B

`pir^(2)hrhog`

C

`2pir^(2)hrhog`

D

`(pir^(2)grhog)/2`

Text Solution

Verified by Experts

The correct Answer is:
A
Work done = mgh [ but h = h/2 average height ]
` W = pir^(2) hrho g xx h/2`
` W = (pir^(2)h^(2)rhog)/2`
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