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A 10 cm long wire is placed horizontal on the surface of water and is gently pulled up with a force of `2xx10^(-2)` N to keep the wire in equilibrium. The surface tension, in `Nm^(-1)` of water isA. 0.1B. 0.2C. 0.001D. 0.002 |
Answer» Correct Answer - A Surface tension`T=(F)/(2l)=(2xx10^(-2))/(2xx10xx10^(-2))=0.1 Nm^(-1)`,. |
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