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Two parallel wires each of length \( 10 \mathrm{~cm} \) are \( 0.5 \mathrm{~cm} \) apart. A film of water is formed between them. If surface tension of water is \( 0.072 \mathrm{~N} / \mathrm{m} \), then the work done in increasing the distance between the wires by \( 1 \mathrm{~mm} \) is
(1) \( 1.44 \times 10^{-5} \mathrm{~J} \)
(2) \( 1.72 \times 10^{-5} \mathrm{~J} \)
(3) \( 1.44 \times 10^{-4} \mathrm{~J} \)
(4) \( 1.72 \times 10^{-4} \mathrm{~J} \)
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