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A beaker of radius 15 cm is filled with ...

A beaker of radius 15 cm is filled with a liquid of surface tension 0.075 N/m. Force across an imaginary diameter on the surface of the liquid is

A

`0.075 N`

B

`1.5xx10^(-2) N`

C

`0.225 N`

D

`2.25xx10^(-2) N`

Text Solution

Verified by Experts

The correct Answer is:
D
`S = 0.075 N//m, r = 15 cm =0.15m`
`implies d = 2r = 0.3 cm`
`S = F/d implies F = 0.075 xx0.15 xx 2 = 2.25 xx10^(-2) N`
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