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Sounds waves travel at 350m//s through a...

Sounds waves travel at `350m//s` through a warm air and at `3500m//s` through brass. The wavelength of a `700 Hz`. Acoustic wave as it enters brass from warm air

A

Decreases by a factor `20`

B

Decreases by a factor `10`

C

Increases by a factor `20`

D

Increases by a factor `10`

Text Solution

Verified by Experts

The correct Answer is:
D
`n_(1)=n_(2)implies(V_(1))/(lambda_(1))=(V_(2))/(lambda_(2))`
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