A rectangular film of liquid is extended from `(4cmxx2cm)` to `(5cmxx4cm)`. If the work done is `3xx10^-4J`, the value of the surface tension of the liquid is

A rectangular film of liquid is extended from (4cmxx2cm) to (5cmxx4cm) .If the work done is 3xx10^-4 J, the value of the surface tension of the liquid is :

A rectangular film of liquid is extended from 4cmxx2cm"to" 5cmxx4cm If the work done is 3xx10^(-4)J , the value of the surface tension of the liquid is …..

A rectangular film of liquid is extended from (4 cm xx 2 cm) to (5 cm xx 4 xx cm) . If the work done is 3 xx 10^(-4)J , the value of the surface tension of the liquid is

A rectangular film of liquid is extended from (4 cm xx 2 cm) to (5 cm xx 4 xx cm) . If the work done is 3 xx 10^(-4)J , the value of the surface tension of the liquid is