Question:

The Prandtl number is the

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Prandtl = momentum diffusivity / thermal diffusivity
Updated On: May 21, 2025
  • Ratio of kinematic viscosity to thermal diffusivity
  • Ratio of thermal diffusivity to kinematic viscosity
  • Product of thermal diffusivity and kinematic viscosity
  • Ratio of absolute viscosity to thermal conductivity
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The Correct Option is B

Solution and Explanation

The Prandtl number ($Pr$) is defined as the ratio of momentum diffusivity (kinematic viscosity) to thermal diffusivity: \( Pr = \frac{\nu}{\alpha} \).
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