The surface energy of liquid film on a ring of area 0.15 m^(2) is (surface tension of liquid is equal to Nm^(-1))

The surface energy of liquid film on a ring of area 0.15 m^(2) is (sur

1.	The surface energy of liquid film on a ring of area 0.15 m^(2) is (surface tension of liquid is equal to Nm^(-1))
Answer» 0.75J 1.5J 2.25J 3.0J Answer :B