Prandtl number is the ratio of

1.	Prandtl number is the ratio of
A.	thermal diffusivity to momentum diffusivity
B.	mass diffusivity to momentum diffusivity
C.	momentum diffusivity to thermal diffusivity
D.	thermal diffusivity to mass diffusivity
Answer» D. thermal diffusivity to mass diffusivity

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Prandtl number is the ratio of

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