How are echoes used by fishermen or marine researchers to locate schools of fish?

Type: MCQ • Marks: 1

A. Using echo-sounding / SONAR transducers mounted on ships

B. Using optical lasers

C. Tasting water

D. Using thermometers

Explanation

Echo sounders bounce high-frequency sound pulses off fish shoals to determine depth and density.

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Class 9th Science (MCQ)

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