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Why is the direction of surface tension in the derivation in bubbles and drops along the circumference against the excess pressure?

Why is the direction of surface tension in the derivation in bubbles and drops along the circumference against the excess pressure?

Grade:12th pass

1 Answers

Arun Kumar IIT Delhi
askIITians Faculty 256 Points
9 years ago
The surface tension acts inwards towards the whole body of the liquid. It will act at 90 degrees to the surfece. If the surface is curved, it is at 90 degrees to the tangent to the surface.

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