A rectangular film of liquid is extended from (4 ~cm 2 ~cm ) to (5 ~cm 4 ~cm ) . If the…
Physics · NEET · NTA Exams — Properties of Solids and Liquids
A rectangular film of liquid is extended from \((4 \mathrm{~cm} \times 2 \mathrm{~cm})\) to \((5 \mathrm{~cm} \times 4 \mathrm{~cm})\). If the work done is \(3 \times 10^{-4}\), the value of the surface tension of the liquid is:
- 0.02 Nm-1
- 8.0 Nm-1
- 0.250 Nm-1
- 0.125 Nm-1
Answer
(D) 0.125 Nm -1
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