The additional force required to lift a flat circular disc of radius 5 cm from the surface of water with surface tension 75 "dyne"cm^(-1). Will be

The additional force required to lift a flat circular disc of radius 5

1.	The additional force required to lift a flat circular disc of radius 5 cm from the surface of water with surface tension 75 "dyne"cm^(-1). Will be
Answer» 750 DYNE `750 PI` dyne 30 dyne 60 dyne Answer :B