A thin wire ring of 3cm radius rests flat on surface of a liquid. The pull required to raise the ring before the film breaks is 30.14 xx 10^(-3) N more than it is after. The surface tension of liquid (in "Nm"^(-1)) is

A thin wire ring of 3cm radius rests flat on surface of a liquid. The

1.	A thin wire ring of 3cm radius rests flat on surface of a liquid. The pull required to raise the ring before the film breaks is 30.14 xx 10^(-3) N more than it is after. The surface tension of liquid (in "Nm"^(-1)) is
Answer» `80 XX 10^(-3)` `87xx 10^(-3)` `90 xx 10^(-3)` `98 xx 10^(-3)` Answer :A