NEET Physics Mechanical Properties of Fluids Questions Solved

The work done in increasing the size of a soap film from 10 cm× 6 cm to 10 cm × 11 cm is 3×10-4 joule. The surface tension of the film is

(a) 1.5×10-2 N/m             (b) 3.0×10-2 N/m

(c) 6.0×10-2 N/m             (d) 11.0×10-2 N/m

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