Q. The molecular velocity of any gas is
A) Inversely proportional to the square root of temperature
B) Inversely proportional to absolute temperature
C) Directly proportional to square of temperature
D) Directly proportional to square root of temperature
Explanation
(d)
Molecular velocity can be
average velocity $= \sqrt{\frac{8RT}{\pi M}}$
root mean square velocity $= \sqrt{\frac{3RT}{M}}$
most probable velocity $= \sqrt{\frac{2RT}{M}}$
In all cases molecular velocity $\propto \sqrt{T}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.