The surface tension of a liquid is 5n m

Asked by admin @ 11/08/2021 in Physics viewed by 306 People

The surface tension of a liquid is 5 n/m. if a film is held on a ring of area 0.02 m2 its surface energy is about

Answered by admin @ 11/08/2021

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•GIVEN:

→Surface Tension (T)=5

→Area of liquid film=0.02

•TO FIND:

Surface Energy of ring of given area.

→As the ring is to be made out of a film it will have 2 free surfaces.

→E=T×2A

→E=5×2×0.02

→E=0.2

•Thus the it's surface energy is 0.02

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