Surface tension may be defined as - Vidyadip

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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