PhysicsWater is allowed to flow through a capillary tube of length 10cm and diameter 2 mm under a constant pressure difference of 6.5 cm of water level. If 0.16 litres of water flows in 1 minute, its coefficient of viscosity is,

Water is allowed to flow through a capillary tube of length 10cm and diameter 2 mm under a constant pressure difference of 6.5 cm of water level. If 0.16 litres of water flows in 1 minute, its coefficient of viscosity is,

  1. A

    0.00937 poise

  2. B

    0.0937 poise

  3. C

    0.000937 poise

  4. D

    0.937 poise

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    Solution:

    =10cm,r=101cmh=6.5cm,V=0.16lt=0.16×103cm3t=1min=60secVt=πPr48ηℓη=πr4ρght8Vℓ=3.141014(1)(6.5)(980)(60)80.16×103(10)=0.00937 poise 

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