For the Stoke's law to be valid in the case of a falling sphere in a f

1.	For the Stoke's law to be valid in the case of a falling sphere in a fluid, the
A.	Reynolds number (based on sphere diameter) should be < 1.
B.	flow around the sphere should be in turbulent region.
C.	sphere must be metallic.
D.	fluid density should be constant.
Answer» D. fluid density should be constant.

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For the Stoke's law to be valid in the case of a falling sphere in a fluid, the

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