STANDARDPhysics-Kinetic Theory of Gases
STANDARD Physics Root Mean Square Speed MCQ Question
Type: MCQ-numerical-Medium-Class 11
A mixture of 2 moles of helium gas (atomic mass = 4 u), and 1 mole of argon gas (atomic mass = 40 u) is kept at 300 K in a container. The ratio of their rms speeds is close to
A
2.24
B
0.32
C
0.45
D
3.16
Correct Answer
Option D
Detailed Explanation
The rms speed . For helium, and for argon, . Thus, .
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