Which of the following has the same dimension as mass diffusivity ?
Correct answer: D. Both B. and C.
- A. Momentum flux
- B. Kinematic viscosity
- C. Thermal diffusivity
- D. Both B. and C.
Explanation
Mass diffusivity has dimensions of length squared per time, the same as both kinematic viscosity and thermal diffusivity. Momentum flux has different dimensions because it includes force or momentum transferred per area per time.
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