Questions
A metallic wire of density d is lying horizontal on the surface of water. The maximum length of wire so that it may not sink will be
detailed solution
Correct option is D
mg=2TL⇒πr2Ldg=2TL⇒πr2dg=2 T This relation is independent of L .Talk to our academic expert!
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A loop of 6.28 cm long thread is put gently on a soap film in a wire loop. The film is pricked with a needle inside the soap film enclosed by the thread. If the surface tension of soap solution is 0.030 N/m, then the tension in the thread is
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