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Sonar and Radar

is the device...

Question

is the device used to find the depth of the sea.

A

RADAR

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B

SONAR

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C

Seismometer

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Solution

The correct option is B SONAR
SONAR is the acronym for 'Sound Navigation and Ranging'.It is the device used to find the depth of the sea. The SONAR sends ultrasonic waves in all directions from the ship. These waves are received after reflection from an obstacle such as the soil, sunken ship or enemy submarine. With the reflected signals, the distance between the soil and the ship is calculated. Hence, depth of the sea can be found.

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