allerySurface tension also equals the surface energy per unit:
ATime
BLoad
CArea
DMass
Answer & Solution
Correct answer: C. Area
1. Stretching a film creates fresh surface and costs energy.
2. The energy spent per unit of new area is the surface energy.
3. That energy per unit area equals the surface tension.
_Source: syllabus Physics Part II, Chapter 10, Mechanical Properties of Fluids._
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