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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