Q. The $r.m.s.$ speed of the molecules of a gas in a vessel is $400\ ms^{- 1}.$ If half of the gas leaks out, at constant temperature, the $r.m.s.$ speed of the remaining molecules will be
A) $800\ ms^{- 1}$
B) $400\sqrt{2}\ ms^{- 1}$
C) $400\ ms^{- 1}$
D) $200\ ms^{- 1}$
Explanation
(c) Since temperature is constant, so $v_{rms}$ remains same
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.