Q.
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
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a
Less than 40 N/m2
b
Greater than 40 N/m2
c
Less than 20 N/m2
d
Greater than 20 N/m2
answer is B.
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Detailed Solution
ΔP=4Tr=40 N/m2
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