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Railways R.R.C. (Gorakhpur) Solved Paper Held on 1st Shift 23-11-2014

  • question_answer
    Speed of the sound in the air depends upon?

    A) air density                     

    B) frequency

    C) wavelength        

    D) intensity

    Correct Answer: C

    Solution :

    Density of stationary atmosphere and frequency of sound remain unchanged. Formula:          \[v=n\lambda \] Here, n remains unchanged Hence,            \[v\,\,\alpha \,\,\lambda \]


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