MHT CET Physics question
10 cm long wire is placed horizontally on the surface of water and is gently pulled up with a force of N to keep the wire in equilibrium. The surface tension of water (in ) is
Answer: (D)
Solution
The film acts on both sides of the wire, so and \dfrac{2×10^{-2}}{2×0.10}$ = 0.1\
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