Physics · Properties of Fluids
If S1, S2, and S3 are the surface tensions at liquid-air, solid-air, and solid-liquid interfaces respectively, and θ is the angle of contact at the solid-liquid interface, then which of the following relations is correct?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1S3 cos θ + S1 = S2
- 2S2 cos θ + S3 = S1
- 3S1 cos θ + S3 = S2✓
- 4S1 cos θ + S2 sin θ = S3
Correct answer
S1 cos θ + S3 = S2
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