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Two vertical parallel glass plates are partially submerged in water. The distance between the plates is d and the length is `l`. Assume that the water between the plates does not reach the upper edges of the plates and the wetting is complete. The water will rise to height (`rho=` density of water and `alpha =` surface tension of water)

A

`(2T)/(drhog)`

B

`(T)/(2drhog)`

C

`(T)/(drhog)`

D

None of these

Text Solution

Verified by Experts

Upward force due to surface tension is balanced by the weight of the liquid which rises in the gap, so `2T.b=bdhrhog`
Where `b=` width of the plates `:. h=(2T)/(drhog)`
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