When a loop of wire is dipped in a wetting liquid and is taken out. A liquid film is formed and loop of light inextensible thread is gently put on the liquid film. A hole is pricked inside the loop of thred. Due to property of suface tension , free surface of the liquid tries to minimize its surface are and hence are of the hole will be maximized. In the above desciption. loop wire is square of side 4 units. If lenght of thread is 15 units what is the final suface area for soap film on one side of wire frame? (Neglect the frication everywhere)

When a loop of wire is dipped in a wetting liquid and is taken out. A

1.	When a loop of wire is dipped in a wetting liquid and is taken out. A liquid film is formed and loop of light inextensible thread is gently put on the liquid film. A hole is pricked inside the loop of thred. Due to property of suface tension , free surface of the liquid tries to minimize its surface are and hence are of the hole will be maximized. In the above desciption. loop wire is square of side 4 units. If lenght of thread is 15 units what is the final suface area for soap film on one side of wire frame? (Neglect the frication everywhere)
Answer» `0.289 " UNITS "^2` `0.3625 "units"^2` `1.9375 " units "^2` `2 "units^2` ANSWER :A

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