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A loop of \( 6.28 \mathrm{~cm} \) long thread is put gently on a soap film in a wire loop. The film is pricked with a needle inside the soap
\( \mathrm{P} \) film enclosed by the thread. If the surface tension of soap

W solution is \( 0.030 \mathrm{~N} / \mathrm{m} \), then the tension in the thread is
(1) \( 1 \times 10^{-4} \mathrm{~N} \)
(2) \( 2 \times 10^{-4} \mathrm{~N} \)
(3) \( 3 \times 10^{-4} \mathrm{~N} \)
(4) \( 4 \times 10^{-4} \mathrm{~N} \)
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