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if the amplitude of two waves is 3:4 then what will be the ratio of their loudness and frequencies?

if the amplitude of two waves is 3:4 then what will be the ratio of their loudness and frequencies?
 

Grade:10

1 Answers

Arun
25750 Points
6 years ago
Dear student
 
 
Loudness of sound is directly proportional to square of amplitude.
hence, Lα A²
(L1/lL2) =(A/A2)² ⇒(3/4)²⇒9/16
Hence amplitudes are in the ratio 9:16
As we know that frequency  of the sound wave has no effect on amplitude.
so, ratios of frequency remains same that is 1:1
 
 
 
Regards
Arun (askIITians forum expert)

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