Which of the following is the technique used in ships to calculate the depth of ocean beds?
A
SONAR
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B
LASER
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C
Reverberation
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D
Sonic boom
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Solution
The correct option is A
SONAR
Explanation of correct option:
Option A:
SONAR: The full form of SONAR is Sound Navigation and Ranging.
The SONAR method is also called echo ranging. It is a device that utilizes ultrasonic waves to estimate and measure the distance, direction and speed of objects underwater.
Explanation of incorrect option:
Option B:
LASER: A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation.
Thus this is not the correct option.
Option C:
Reverberation: Reverberation is the phenomenon of persistence of sound after it has been stopped as a result of multiple reflections from surfaces such as furniture, people, air, etc. within a closed surface.
Thus this is not the correct option.
Option D:
Sonic boom: A sonic boom is a thunderous noise caused by compressed moving sound waves. It is generated by an object moving faster than the speed of sound.