Question

If $X$ is the total number of collision which a gas molecule registers with other molecules per unit time under particular conditions, then the collision frequency of the gas containing $N$ molecules per unit volume is:

• A. $X/N$
• B. $NX$
• C. $2NX$
• D. $NX/2$

Answer 1

The correct option is A $X/N$

Collision frequency=$\frac{totalnumberofcollisionsperunittime}{numberofmoleculesperunitvolume}$

$\therefore$ collision frequency$=X/N$

Answer is option [A]