ICSE Class 10 Physics 2022 Solved Paper

Rohit playing a flute and Anita playing a piano emit sounds of same pitch and loudness.

Question : 24

Total: 45

If now the loudness of the sound from flute becomes four times that of the sound from piano, then write the value of the ratio AF:Ap⋅(AF.-amplitude of sound wave from flute, Ap amplitude of sound wave from piano)

Solution:

∵‌‌ Loudness ‌2 (amplitude) ‌2
∴‌‌‌

=(‌

)2
Now, loudness of flute is become 4 times of piano
⇒‌

=(‌

)2
⇒‌

=√‌

=‌

∴‌AF:AP=2:1

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