Home
Class 11
PHYSICS
Sound waves of wavelength lambda travell...

Sound waves of wavelength `lambda` travelling in a medium with a speed of `upsilon m//s` enter into another medium where its speed is `2upsilon m//s.` Wavelength of sound waves iin the second medium is

A

`lambda`

B

`lambda//2`

C

`2lambda`

D

`4lambda`

Text Solution

Verified by Experts

The correct Answer is:
C
Let the frequency in the first medium is f and in the second medium is f . .
Frequency remains same in both the medium
So, `f=f.implies(v)/(lambda)=(v.)/(lambda.)implieslambda.=((v.)/(v))lambda`
`lambda and lambda.`, v and v. are wavelengths and speeds in first and second medium respectively.
So, `lambda.=((2v)/(v))lambda=2lambda`.
Promotional Banner

Similar Questions

Explore conceptually related problems

Sound waves of wavelength alpha travelling in a medium with a speed of v m s^(-1) enter into another medium where its speed is 2v m s^(-1) . Wavelength of sound waves in the second medium is

The speed of sound wave in a given medium is

If a wave of wavelength lambda is travelling in a medium with velocity V, then its frequency is

Sound waves of length lamda travelling with velocity v in a medium enter into another medium in which their velocity is 4v. The wavelength in 2nd medium is:

A sine wave of wavelength lamda is travelling in a medium. The minimum distance between the two particles always having same speed is.

Two sound waves of wavelength 1 m and 1.02 m produces 16 beats in 2 s in a medium then the velocity of the sound in that medium is

Monochromatic light of wavelength lambda_1 travelling in medium of refractive index n_1 enters a denser medium of refractive index n_2 . The wavelength in the second medium is

A source of sound produces waves of wavelength 60 cm when it is stationary if the speed of sound in air is 320(m)/(s) and source moves with speed 20(m)/(s) , the wavelength of sound in the forward direction will be nearest to