1.

Using SONAR, a source of ultrasonic waves of frequency 0.06 MHz sends down a pulse towards the seabed, which returns back after 0.80 s. If the speed of sound in sea-water is 1700 m / s, then the depth of the sea and the wavelength of the pulse respectively are:

A. 550 m; 0.0243 m
B. 680 m; 0.0283 m
C. 580 m; 0.0253 m
D. 660 m; 0.0273 m
Answer» C. 580 m; 0.0253 m


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