Question

Suppose a container is evacuated to leave just one molecule of a gas in it. Let $v_{\alpha }$ and $v_{rms}$ represent the average speed and the rms speed of the gas.

• A. $v_{\alpha }>v_{rms}$
• B. $v_{\alpha }<v_{rms}$
• C. $v_{\alpha }=v_{rms}$
• D. $v_{rms}$ is undefined.

Answer 1

The correct option is C $v_{\alpha }=v_{rms}$

if there is single molecule, squaring and under rooting will give the same velocity again.
thus oprtion c.