When a wave travels from one medium to another, the wavelength changes but not the frequency. The wavelength of sound disturbance is 30 cm in air and the wave velocity is 340 m/s. What will be the wavelength of this disturbance in Helium & water? The speed of sound in helium is 970 m/s and 1450 m/s in water?
v 3400 1450 3 1450 3 3400 1.28 m
