A source of sound is located in a medium in which speed of sound is V and an observer is located in a medium in which speed of sound is 2V. Both the source and observer are moving directly towards each other at velocity `V/5`. The source has a frequency of `f_(0)`.
(a) Find the wavelength of wave in the medium in which the observer is located.
(b) Find the frequency received by the observer.

Answer

(a) `8/5 V/f_(0)`
(b) `11/8 f_(0)`