Question

Two waves A and B are of
amplitudes 3cm and 4cm respectively
compare their loudness .Which sound
is louder?​

Answer 1

Answer:

the wave having the altitude of 4cm will be louder

Explanation:

see the above image

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Answer 2

Sound wave B is louder than sound wave A.

• The amplitude of a sound wave is the height of the wave. It is denoted by "A".
• It shows how much maximum displacement is done by the vibrating particles from their mean position on sound production.
• It measures the loudness of the sound wave.
• Loudness ∝ (Amplitude)²
• This means, higher the amplitude of a sound wave, the more will be its loudness.

• As wave B (A= 4cm) has a higher amplitude than wave A (A= 3cm), therefore wave B is louder than sound wave A.