Q.
The work done in blowing a soap bubble of radius 0.2 m is (the surface tension of soap solution being 0.06 N/m)
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a
192π×10−4J
b
280π×10−4J
c
200π×10−3J
d
None of these
answer is A.
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Detailed Solution
W=8πr2×T=8π×(0.2)2×0.06=192π×10−4J
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