Question

pls reply asap

loudness of sound depends on its

a) frequency. b) wavelength

c) amplitude. d) velocity


please reply fast ​

Answer 1

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Option c)

Amplitude

Loudness of sound depends on its Amplitude.

$\mathfrak{\large{\underline{\underline{Additional\:\:Information :- }}}}$

• Sound is a form of energy that produces a sensation of hearing in our ears.

• A sound is produced when an object moves or vibrates.

• A vibration is rapid to and fro or back and forth motion of an object about a mean position, it is known as the oscillatory motion.

• Every Oscillatory motion is characterised by -

• Amplitude
• Time Period
• Frequency

• $\textbf{Amplitude -}$ Amplitude of vibration is the maximum displacement of the vibrating object on either side of its mean position.

• $\textbf{Time Period -}$ Time period of a vibration is defined as the time taken by the vibrating object for one complete vibration.

• $\textbf{Frequency -}$ The frequency of a vibration is defined as the total number of complete vibrations by the vibrating object in one second.

• The loudness of a sound is determined by the amplitude of the sound wave.

• Loudness helps us to differentiate between feeble and loud sound.

• The larger the amplitude louder will be the sound.

• Loudness is measured in unit called decibel (dB).

Answer 2

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AMPLITUDE

The amplitude of the wave determines the loudness of a sound wave. A larger amplitude means a loud sound while a smaller amplitude means a soft sound. If the amplitude is high then the sound will be louder and the sound will be feeble if the amplitude is low.