The excess pressure inside a spherical soap bubble of radius lcm is balanced by a column of oil (Sp.gr =0.8),2mm high. The surface tension of the bubble is :

The excess pressure inside a spherical soap bubble of radius lcm is ba

1.	The excess pressure inside a spherical soap bubble of radius lcm is balanced by a column of oil (Sp.gr =0.8),2mm high. The surface tension of the bubble is :
Answer» 3.92 N/m 0.0392 N/m 0.392 N/m 0.00392N/m ANSWER :B