NEET Physics Kinetic Interpretation of Temperature MCQ Question
If the root mean square (rms) speed of a nitrogen molecule at 300 K is 516 m/s, what would be the approximate rms speed of a hydrogen molecule at the same temperature, given that the molecular mass of nitrogen is 28 u and hydrogen is 2 u?
2058 m/s
1290 m/s
516 m/s
258 m/s
Correct Answer
Detailed Explanation
According to the kinetic interpretation of temperature, the rms speed of a gas is inversely proportional to the square root of its molecular mass at a given temperature. Since hydrogen is lighter than nitrogen, its rms speed at the same temperature is higher.
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