RAJASTHAN ­ PET Rajasthan PET Solved Paper-2008

  • question_answer
    Hydrogen gas is filled in the bubble. For the sound wave, the bubble will be

    A)  like a converging lens

    B)  like a convex mirror

    C)  like a concave lens

    D)  None of the above

    Correct Answer: A

    Solution :

     The density of hydrogen is less than air, the velocity of sound in hydrogen is greater than velocity of sound in air. Therefore, the hydrogen will behaviour like a rarer medium and bubble will behave like a converging lens.


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