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9th Class Science Sound Question Bank 9th CBSE Science Sound

  • question_answer
                      A sound wave has a frequency of 2 kHz and a wavelength of 45 cm. It takes 4 s to travel. Calculate the distance it travels.

    Answer:

                                          Frequency of sound wave v = 2 kHz = 2 x 103 Hz Wavelength of the wave Velocity of the wave = 2 x103x 0.45= 900 m/s Time to travel = 4 s Distance travelled by the wave


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