7. If the surface tension of a soap solution is 0.03 MKS units, then the excess of pressure inside a soap bubble of diameter 6 mm over the atmospheric pressure will be (a) Less than 40 N/m2 (b) Greater than 40 N/m2 (c) Less than 20 N/m2 (d) Greater than 20 N/m2 Ans. b (3) Read More
