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Grade: 10
        
if the amplitude of two waves is 3:4 then what will be the ratio of their loudness and frequencies?
 
5 months ago

Answers : (1)

Arun
11430 Points
							
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)
5 months ago
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