Question : The loudness of the sound depends on:
Option 1: Frequency
Option 2: Wavelength
Option 3: Amplitude
Option 4: Pitch
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Correct Answer: Amplitude
Solution : The correct option is Amplitude.
The intensity or amplitude of a sound determines its loudness. The amplitude of a sound wave determines how loud it is perceived. In the context of sound waves, amplitude reflects the height or size of the wave, and it correlates to the amount of air compression and rarefaction caused by the vibrating source. A greater amplitude indicates that the air molecules are more displaced, resulting in a more powerful sound.
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