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35. A 10 cm long wire is placed horizontally on the

A 10 cm long wire is placed horizontally on the surface of water and is gently pulled up with a force of 2 ×10-2 N to keep the wire in equilibrium. The surface tension, in Nm-1, of water is

(a)  0.1

(b)  0.2

(c)   0.001

(d)  0.002

Ans. a

(19)

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