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Echo

The frequenci...

Question

The frequencies of four sound waves are given below. Which of these sound waves can be used to measure the depth of sea by the echo method?

A

15,000 Hz

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B

10 kHz

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C

50 kHz

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D

10,000 Hz

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Solution

The correct option is C 50 kHz
Echo method is used in SONAR to determine the depth of the sea. Sound wave of frequency 50 kHz is used to measure the depth of sea by the echo method.

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