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Question: Answered & Verified by Expert
In Poiseuilli's method of determination of coefficient of viscosity, the physical quantity that requires greater accuracy in measurement is
PhysicsMechanical Properties of FluidsJEE Main
Options:
  • A Pressure difference
  • B Volume of the liquid collected
  • C Length of the capillary tube
  • D Inner radius of the capillary tube
Solution:
1315 Upvotes Verified Answer
The correct answer is: Inner radius of the capillary tube
As Poiseuilli's equation contains $\mathrm{r}^4$ in it, radius of tube should be known more accurately.

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