Thermal diffusivity is given by__________________?
Correct answer: A. k/ρCp
- A. k/ρCp
- B. ρCp/k
- C. μCp/a
- D. μ/hCp
Explanation
Thermal diffusivity measures how quickly temperature disturbances spread through a material and is defined as α = k/(ρCp). High conductivity increases diffusivity, while density and heat capacity reduce it.
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