Q4. A plane sound wave in air at 20°C, with wavelength 589 mm, is incident on a smooth surface of water at 25°C at an angle of incidence of 13.0°. Determine: a) the angle of refraction for the sound wave and b) the wavelength of the sound in water. Then, a narrow beam of sodium yellow light, with wavelength 589 nm in vacuum, is incident from air onto a smooth water surface at an angle of incidence of 13.0°. Determine: e) the angle of refraction and d) the wavelength of the light in water. e) Compare and contrast the behavior of the sound and light waves in this problem. Hint: (in air at 20°C, the speed of sound is 343 m/s, the speed of sound in water at 25°C is 1493 m/s). of son

Q4. A plane sound wave in air at 20°C, with wavelength 589 mm, is incident on a smooth surface of water at 25°C at an angle of incidence of 13.0°. Determine: a) the angle of refraction for the sound wave and b) the wavelength of the sound in water. Then, a narrow beam of sodium yellow light, with wavelength 589 nm in vacuum, is incident from air onto a smooth water surface at an angle of incidence of 13.0°. Determine: e) the angle of refraction and d) the wavelength of the light in water. e) Compare and contrast the behavior of the sound and light waves in this problem. Hint: (in air at 20°C, the speed of sound is 343 m/s, the speed of sound in water at 25°C is 1493 m/s). of son