Rms Vs Average Speed
Correct order for speeds: v_rms, v_avg, v_mp (most probable) is:
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About This Question
- Subject
- physics
- Chapter
- kinetic theory of gases
- Topic
- rms vs average speed
- Difficulty
- Hard
- Year
- 2025
Solution
Correct Answer:
vrms>vavg>vmp
For a Maxwell-Boltzmann distribution of speeds:
- Most Probable Speed (vmp): M2RT≈1.41MRT
- Average Speed (vavg): πM8RT≈1.60MRT
- RMS Speed (vrms): M3RT≈1.73MRT Therefore, the order is vrms>vavg>vmp. Memory trick: RAM (RMS > Avg > Most probable).
This hard difficulty physics question is from the chapter kinetic theory of gases, covering the topic of rms vs average speed. It appeared in the 2025 exam.
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