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In equilibrium the tensile stress to which a wire of radius r is subjected by attaching a mass ‘m’ is ____.(A) \(\frac{mg}{\pi r}\)(B) \(\frac{mg}{2\pi r}\)(C) \(\frac{mg}{\pi r^2}\)(D) \(\frac{mg}{2\pi r^2}\) |
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Answer» Correct option is: (C) \(\frac{mg}{\pi r^2}\) |
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