Q. $r.m.s.$ velocity of nitrogen molecules at NTP is
A) $492\ m/s$
B) $517\ m/s$
C) $546\ m/s$
D) $33\ m/s$
Explanation
(b) $v_{rms} = \sqrt{\frac{3RT}{M}} = \sqrt{\frac{3 \times 8.3 \times 300}{28 \times 10^{- 3}}} = 517m/s$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.