Question

Work of 3.0×10 ^-4 J is required to be done in increasing the size of a soap film from 10cm×6cm to 10cm×11cm. The surface tension of the soap film is:

a) 5×10^-2N/m

b) 3×10^-2N/m

c) 1.5×10^-2N/m

d) 1.2×10^-2N/m​

Answer 1

Answer:

A is the answer

Step-by-step explanation:

5×10^-2N/m