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9th Class Science Sound Question Bank Sound Formative Objective Problems

  • question_answer
    A man stands at a distance of 255m from a cliff. He fires a gun and heard the echo after 1.5 seconds. What will be the velocity of the sound?

    A)  330 m/s                              

    B)  340 m/s

    C)  320 m/s                              

    D)  335 m/s

    Correct Answer: B

    Solution :

      The distance between the man and the cliff, (d) = 255 m, Time, \[(t)=1.5\text{ }s,\text{ }v=?\] We know, \[V=\frac{2d}{t}=\frac{2\times 255}{1.5}=340\,m/s\]


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