Q. Which type of waves are used in ‘SONAR’?

A
X-rays
B
Alpha rays
C
Light waves
D
Ultrasonic waves
Solution:

Both radar and sonar locate objects from the echo of a signal that is bounced off the object. Radar uses radio waves, which are a type of electromagnetic energy. Sonar uses the echo principle by sending out ultrasonic sound waves underwater or through the human body to locate objects. Sound waves are a type of acoustic energy.

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