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STD 11 - 9.2. surface tension — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 - 9.2. surface tension4 Marks
MCQ
Surface tension may be defined as
  • ✓
    The work done per unit area in increasing the surface area of a liquid under isothermal condition
  • B
    The work done per unit area in increasing the surface area of a liquid under adiabatic condition
  • C
    The work done per unit area in increasing the surface area of a liquid under both isothermal and adiabatic conditions
  • D
    Free surface energy per unit volume
✓

Answer

Correct option: A.
The work done per unit area in increasing the surface area of a liquid under isothermal condition
a
(a) Surface tension of a liquid may also be defined as the work done per unit area in increasing the surface area of a liquid under isothermal conditions$:$

Mathematically, surface tension of the liquid $T=\frac{W}{\Delta A}$

where $W$ is the work done to increase the surface area by $\Delta A$

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