13.A capillary tube of radius 0.25mm is dipped vertically in a liquid of density 800kg/m3 and of surface tension 3x10power-2N/m2.The angle of contact of liquid glass is given by cos theeta =0.3 If g=10m/sec2 the rise of liquid in the capillary tube is ....Cm
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0.9
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0.9 this is the answer
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