Q. In kinetic theory of gases, a molecule of mass $m$ of an ideal gas collides with a wall of vessel with velocity $V.$ The change in the linear momentum of the molecule is
A) $2mV$
B) $mV$
C) $- mV$
D) Zero
Explanation
(a) $\mathrm{\Delta}p = mV - ( - mV) = 2mV$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.