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9th Class Science Sound Question Bank Self Test-7

  • question_answer
    An ultrasonic wave is sent from a ship towards the bottom of the sea. It is found that the time interval between the sending and receiving of the wave is 1.6 s. What is the depth of the sea, if the velocity of sound in the seawater is 1400 m/s?

    A)  980 m

    B)  1240 m       

    C)  1054 m 

    D)  1120 m

    E)  None of these

    Correct Answer: D

    Solution :


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