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RRB Junior Engineer / DMS / CMA 2019 · Question 81 of 3719

Which of the following determines the loudness or softness of the sound?

Physics - Sound

  1. Aa. Frequency
  2. Bb. Wave velocity
  3. Cc. AmplitudeCorrect
  4. Dd. Oscillation

Answer: C. c. Amplitude

Explanation

Sound: The sound is a longitudinal wave in which the particles of the medium through which the sound is transported vibrate parallel to the direction that the sound wave moves. Loudness: The phenomenon of sound waves that depend on the amplitude and energy of the sound wave is called Loudness. • When the amplitude of the sound is large, then the sound wave is considered to be loud. Frequency: The number of wave cycles happening per second is called frequency. Amplitude: The maximum amount of displacement of the medium particles from its mean position is called the amplitude of the wave. Wavelength: The distance between two adjacent maxima or two adjacent minima of a wave is called wavelength of that wave. It is denoted by λ. Pitch: The response of the ear to the frequency of sound is called the pitch of the sound.

Source: RRB JE 2019 CBT-1 (24-May-2019 Shift-2) — ixambee compilation with answer key and solutions · reliable-secondary

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