A bat emits ultrasonic sound of frequency 1000 kHz in air. If the sound meets a water surface, what

Question

A bat emits ultrasonic sound of frequency 1000 kHz in air. If the sound meets a water surface, what is the wavelength of the transmitted sound in water? (Speed of sound in air is 340 m/s and in water is 1486 m/s)

Professor PC Thomas Classes · Answer

Frequency remains unchanged during transmission. Wavelength in water $\lambda_w = v_w / f = 1486 / (1000 	imes 10^3) \approx 1.49 	imes 10^{-3}$ m.