Do we have to consider 2 surfaces? If yes then why?

Do we have to consider 2 surfaces? If yes then why? 25. (d) None of these s ess soap A 10 cm long wire is placed horizontally on the surface of water and is gently pulled up with a force of 2 x 10-2 N to keep the wire in equi!ibrium The surface tension, in Nm- , of water is (c) 0.001 i n is an atomi [AMU (Med.) 19991 (d) 0.002