In an experiment to determine the coefficient of viscosity of a liquid using the formual eta=(piPr^(4))/(8l Q) the radius of the capillary tube was measured to be 0.41 mm using an instrument of least count 0.001 cm, length l was measured usinga metre scale as 15 cm. The percentae error in the pressure difference is 0.4% and the percentage error in the volume of the liquid flow out per second Q is 0.3% what is the maximum percentage error in the coefficient of viscosity?

In an experiment to determine the coefficient of viscosity of a liquid

1.	In an experiment to determine the coefficient of viscosity of a liquid using the formual eta=(piPr^(4))/(8l Q) the radius of the capillary tube was measured to be 0.41 mm using an instrument of least count 0.001 cm, length l was measured usinga metre scale as 15 cm. The percentae error in the pressure difference is 0.4% and the percentage error in the volume of the liquid flow out per second Q is 0.3% what is the maximum percentage error in the coefficient of viscosity?
Answer» Solution :`V=pid^(2)h//4`. % ERRON in `V=2(Deltad//d)+(Deltah//h)`(i) using SCALE `DeltaV//V=(2xx0.1//2.4)+(0.1//10-5)=9.28%` (ii) Using CALIPERS `DeltaV//V=(2xx0.01//4)+(0.01//10.5)=0.9%`.