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Bat can produce ultrasonic sound....

Bat can produce ultrasonic sound.

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A bat emits ultrasonic sound of frequency 1000 kHz in air. If the sound meets a water surface, what is the wavelength of (a) the reflected sound, (b) the transmitted sound ? Speed of sound in air is 340 ms ^(-1) and in water 1486 ms ^(-1).

A stationary (steady) ship transmits ultrasonic sound, that returns from the seabed, after the transmission it is received after 4s. If velocity of the ultrasonic sound in the sea is 1531 ms^(-1) then what is the distance of the seabed from the ship?

Rhinoceroses can produce the sound of frequency as low as 5 Hz.

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