A circular frame made of 20 cm long thin wire is floating on the surface of water. If the surface tension of water is 70 dyne/cm. the required excess force to separate this frame from water will be :

A circular frame made of 20 cm long thin wire is floating on the surfa

1.	A circular frame made of 20 cm long thin wire is floating on the surface of water. If the surface tension of water is 70 dyne/cm. the required excess force to separate this frame from water will be :
Answer» 2800 dyne 800 dyne 280 dyne 1800 dyne Answer :A