Q. By what factors does the average velocity of a gaseous molecule increase when the temperature (in Kelvin) is doubled?
A) 1.4
B) 2.0
C) 2.8
D) 4.0
Explanation
[Solution from source] Average speed is proportional to √T (v = √(8RT/πM)). Doubling the Kelvin temperature increases it by √2 ≈ 1.4 times. A factor 2 would apply to kinetic energy, not speed. Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.