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NEET Sample Paper NEET Sample Test Paper-61

  • question_answer
    The disc of a siren has n holes and the frequency of its rotation is 300 rpm. It produces a note of wavelength 2.4m, when the velocity of sound in air is 360m/s. Then value of n is:

    A) 36                    

    B) 30   

    C) 5                                             

    D) 24

    Correct Answer: A

    Solution :

    Not Available          


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