A ring of radius 0.75 cm is floating on ...

A ring of radius 0.75 cm is floating on the surface of water . If surface tension of water is 0.07N//m , then the force required to lift the ring from the surface of water will be

`66xx10^(-1)` N

`66xx10^(-2)` N

`66xx10^(-3)` N

`66xx10^(-4)` N

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