A vessel contains only two gas molecules. Which of the following relation is correct for RMS speed (u), average speed (c) and most probable speed (α) for the molecules?

Question

Prashant Kotian · Accepted Answer

Correct answer: B. for only two molecules with velocities v1 and v2, u = √((v1^2 + v2^2)/2) and c = (v1 + v2)/2. since rms velocity is mathematically always greater than or equal to average velocity (u ≥ c), and most probable speed is meaningless for only two molecules, option (b) is correct.

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