NEET Physics Mechanical Properties of Fluids Questions Solved


The pressure of air in a soap bubble of 0.7cm diameter is 8 mm of water above the pressure outside. The surface tension of the soap solution is

(a) 100 dyne/cm                              (b) 68.66 dyne/cm
(c) 137 dyne/cm                              (d) 150 dyne/cm

(b) P=4Tr=hdgT=rhdg4=0.35×0.8×1×1034=70 dyne/cm68.66 dyne/cm

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