Railways R.R.C. (Ajmer) Solved Paper Held on 1st Shift 2-11-2014

  • question_answer
    Decibel is?

    A) a musical instrument

    B) a measure of sound level

    C) a musical noise

    D) a wavelength of noise

    Correct Answer: B

    Solution :

    The decibel scale measures sound based human hearing, which makes it one of the most unusual scientific measurements.               


You need to login to perform this action.
You will be redirected in 3 sec spinner