A bubble of radius 2cm is blown inside a cold drink using a straw. If the surface tension of liquids is 60 dyme/cm. Find the workdone (in ergs) in blowing the bubble?

A bubble of radius 2cm is blown inside a cold drink using a straw. If

1.	A bubble of radius 2cm is blown inside a cold drink using a straw. If the surface tension of liquids is 60 dyme/cm. Find the workdone (in ergs) in blowing the bubble?
Answer» `960pierg` `160pierg` `96pierg` `860pierg` ANSWER :A