NEET Physics Mechanical Properties of Fluids Questions Solved

If the excess pressure inside a soap bubble is balanced by oil column of height 2 mm, then the surface tension of soap solution will be (r = 1 cm and density d = 0.8 gm/cc)

(a) 3.9 N/m                 

(b) 3.9×10-2 N/m

(c) 3.9×10-3 N/m       

(d) 3.9 dyne/m

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