Sound WavesHard
Question
Sound wave travel at 350 m/s through a warm air and at 3500 m/s through brass. Thewavelength of a 700 Hz acoustic as it enters brass from warm air
Options
A.decrease by a factor 10
B.increase by a factor 20
C.increase by a factor 10
D.decrease by a factor 20
Solution
Here, 
= 350 m/s , 
= 3500 m/s
When a sound wave travel from one medium to another medium its frequency remains the same
∴ Frequency,
Since
remains the same in both the medium 
λbrass = λair ×
= 10 λair
= 350 m/s , = 3500 m/sWhen a sound wave travel from one medium to another medium its frequency remains the same
∴ Frequency,
Since
remains the same in both the medium λbrass = λair ×
= 10 λair Create a free account to view solution
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