alleryThe mean free path in gases is of the order of thousands of:
AAnglemetres
BAirmiles
CAngstroms
DAmpereturns
Answer & Solution
Correct answer: C. Angstroms
1. The scale is atomic rather than everyday.
2. The unit used is the one for atomic dimensions.
3. The mean free path in gases is of the order of thousands of angstroms.
4. So the answer is angstroms.
_Source: syllabus Physics Part II, Ch 12 'Kinetic Theory'_
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