Questions
A soap bubble of radius R is blown from a soap solution. After heating the solution, a second bubble of radius 2R is blown. The work required to blow the second bubble in comparison to that required for the first bubble is:
detailed solution
Correct option is C
energy of a soap bubble is 8πR2T when R is double energy will be four times but as temperature increases surface tension decreases so energy will be little less than four timesTalk to our academic expert!
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Free surface of a liquid has a tendency to contract and minimise its surface area. This tendency is due to:
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