NEET Sample Paper NEET Sample Test Paper-14

  • question_answer By what factor does the average velocity of a gaseous molecule increase when the absolute temperature is doubled?

    A)   1.4                            

    B)  2.0

    C)  2.8                             

    D)  4.0

    Correct Answer: A

    Solution :

    Average velocity of a gaseous molecule \[=\sqrt{\frac{8RT}{\pi M}}\] If the absolute temperature is doubled, then new Average velocity becomes \[\sqrt{\frac{8R.2T}{\pi M}}\] New average velocity \[=\sqrt{2}.\sqrt{\frac{8RT}{\pi M}}\] New average velocity \[=1.4\times \]Original average velocity. Hence, the correct option is [a].

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