Q. The ratio of mean kinetic energy of hydrogen and nitrogen at temperature $300\ K$ and $450\ K$ respectively is
A) $3\ :2$
B) $2\ :3$
C) $2\ :21$
D) $4\ :9$
Explanation
(b) $\frac{E_{1}}{E_{2}} = \frac{T_{1}}{T_{2}} = \frac{300}{450} = \frac{2}{3}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.