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Surface Tension — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsSurface Tension1 Mark
MCQ
Two droplets merge with each other and forms a large droplet. In this process
  • ✓
    Energy is liberated
  • B
    Energy is absorbed
  • C
    Neither liberated nor absorbed
  • D
    Some mass is converted into energy
✓

Answer

Correct option: A.
Energy is liberated
(a) When two droplets merge with each other, their surface energy decreases.$W=T(\Delta A)=($ negative) i.e. energy is released.

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