Calculate the density of paraffin oil, if glass capillary of diameter 0.25 mm dipped in paraffin oil of surface tension 0.0245 N/m rises to a height of 4 cm. (Angle of contact of paraffin with glass = 28° and acceleration due to gravity = 9.8 m/s²) (Feb. 2014)

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Q: Ex. 11 : Calculate the density of paraffin oil, if glass capillary of diameter 0.25 mm dipped in…

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