Physics · Surface Tension
A film of soap solution is formed between two straight parallel wires of length 10 cm each, separated by 0.5 cm. If their separation is increased by 1 mm while maintaining parallelism, how much work must be done? (Surface tension of the solution = 65 × 10-2 N/m)
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 15.76 × 10-5 J
- 22.88 × 10-5 J
- 31.30 × 10-4 J✓
- 47.22 × 10-6 J
Correct answer
1.30 × 10-4 J
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