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JEE Main & Advanced Sample Paper JEE Main Sample Paper-4

  • question_answer
    \[{{E}_{O}}\And {{E}_{H}}\]respectively represent the average kinetic energy of a molecule of oxygen and hydrogen. If the two gases are at same temperature, which of the following statements is true?

    A) \[{{E}_{O}}>{{E}_{H}}\]                 

    B) \[{{E}_{O}}={{E}_{H}}\]

    C) \[{{E}_{O}}<{{E}_{H}}\]                 

    D)  nothing can be said about the magnitude of \[{{E}_{O}}\And {{E}_{H}}\]as the information given is insufficient.

    Correct Answer: B

    Solution :

    The average KE of molecule \[=\frac{kT}{2}\]which is independent of the molecular mass.


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