Ultrasonic waves are used in SONAR to

Q. Ultrasonic waves are used in SONAR to

A

Detect the frequency of the waves

B

Detect the radio waves

C

Detect objects on sea bed

D

(A) and (C) both

Solution:

Sonar is used to detect objects on sea bed. Ultra sonic sound is used in sonar.
This sound is not audible to human ears.
It is reflected from the objects under the water.
Using the time taken by the sound to reach source is used to find position of the object.

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