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Q.

Is it true that SONAR works on the principle of reflection of sound?


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a

True

b

False  

answer is A.

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Detailed Solution

The above statement is true.
SONAR is used to determine the depth of the seas. It is illustrated by the production of echo by the sea bed. An echo is formed when sound strikes an obstacle while travelling and gets reflected back. Therefore, we can say that SONAR works on the principle of reflection of sound. The spacecraft emits ultrasonic waves in all directions, and they are picked up upon return after being reflected by the obstructions.
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