If the excess pressure inside a soap bubble of radius
5 mm is equal to the pressure of a water column
of height 0.8 cm, then the surface tension of the
soap solution will be
a) 980 N/m
b) 98 x 10-2 N/m
c) 98 x 10-3 N/m d) 98 N/m
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maa ki ch>ut aur kitne sawaal puchega????
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