Question

what's relation between frequency velocity and wavelength

Answer 1

frequency is always indirectly propotionly to wavelength

Answer 2

Recall that v = f λ v = f λ , and in a given medium under fixed temperature and humidity, v is constant. Therefore, the relationship between f and is inverse: The higher the frequency, the shorter the wavelength of a sound wave. The speed of sound can change when sound travels from one medium to another.