Q .     If two glass plates have water between them and are separated by very small distance (see figure), it is very difficult to pull them apart. It is because the water in between forms cylindrical surface on the side that give rise to lower pressure in the water in compression to atmosphere. If the radius of the cylindrical surface is `R` and surface tension of water is `T` then the pressure in water between the plates is lower by.

JEE 2015 Mains 10 April
A

`frac{T}{4R}`

B

`frac{T}{2R}`

C

`frac{4T}{piR}`

D

`frac{2T}{piR}`

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