Q. The coefficient of viscosity for hot air is
A) Greater than the coefficient of viscosity of cold air
B) Smaller than the coefficient of viscosity for cold air
C) Same as the coefficient of viscosity for cold air
D) Increases or decrease depending on the external pressure
Explanation
(a) For air, $\eta \propto \sqrt{T}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.