question_answer

A 10 cm long wire is placed horizontally on the surface of water and is gently pulled up with a force of \[2\text{ }\times {{10}^{-2}}N\]to keep the wire in equilibrium. The surface tension, in\[N{{m}^{-1}}\], of water is                                       [AMU (Med.) 1999]

A) 0.1

B)              0.2

C)             0.001

D)                       0.002