Question:
The continuum approach breaks down when the mean free path of the molecules is
The continuum approach breaks down when the mean free path of the molecules is
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Use Knudsen number (Kn) to assess continuum validity.
Updated On: June 02, 2025
- the same order of magnitude as the smallest significant length in the problem being investigated
- greater than the magnitude as the smallest significant length in the problem being investigated
- less than the magnitude as the smallest significant length in the problem being investigated
- less than one
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The Correct Option is A
Solution and Explanation
Continuum assumption fails when molecular mean free path is comparable to characteristic problem dimensions — requiring molecular or statistical mechanics.
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