MCQ
Q.
Loudness of sound is determined by _______ of sound.
Correct Answer: A
Explanation:
- Sound is a longitudinal mechanical wave that propagates by making compressions (high pressure) and rarefactions(low pressure) in its propagating medium.
- The amplitude of wavelength is the maximum distance the particle oscillating moves from the mean position.
- The frequency of the wave is the number of times one complete cycle of compressions
- More the frequency more is the pitch of the sound, the sound is having more shrillness.
- The more the amplitude the more is the loudness of the sound.
So, loudness depends upon the amplitude.
Important Points
- The Pitch of the sound depends upon frequency.
- Mathematically, loudness is directly proportional to the square of the amplitude.
L ∝ A2
