NEET Physics Mechanical Properties of Fluids Questions Solved

A spherical drop of water has radius 1 mm If surface tension of water is 70×10-3 N/m difference of pressures between inside and out side of the spherical drop is

(a)35 N/m2                            (b) 70 N/m2
(c)140 N/m2                           (d) Zero

(c) P=2TR=2×70×10-31×10-3=140 N/m2

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