Question
The temperature of an ideal gas is increased from 120 ~K to 480 ~K . If at 120 ~K , the root mean square velocity of the gas molecules is v, at 480 ~K it becomes
BITSAT
Physics
Kinetic Theory of Gases
2021
BITSAT 2021
BITSAT Physics Question (2021) — Solution
Options
- A. 4 u
- B. 2 u
- C. u 2
- D. u 4
Answer
B. 2 u
Step-by-step solution
\( v _ 1 v _ 2 = 3 RT _ 1 M 3 RT _ 2 M = T _ 1 ~T _ 2 v _ 2 =2 v _ 1 \)
Related: Physics — Kinetic Theory of Gases · All PYQ Banks