Momentum and CollisionHard
Question
The ring of radius 1m is lying on the surface of liquid. It is lifted from the liquid surface by a force of 4 Newtons in such a way that the liquid film in it remains intact. The surface tension of liquid will be : -
Options
A.
N / m
N / mB.
N / m
N / mC.
N / m
N / mD.
N / m
N / m
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