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Indian Coast Guard Yantrik Sound and Ultrasound — practice questions

Explore 1 free Sound and Ultrasound questions in Indian Coast Guard Yantrik Science. Open each question or exercise to read its content, reference answers and available explanation.

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Sound and Ultrasound questions and exercises with answers

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Which of the following animals can produce ultrasound?Read the answer and worked solution →

Worked practice questions

Which of the following animals can produce ultrasound?

  1. Moths
  2. Sharks
  3. Elephants
  4. Porpoises
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Correct answer: D. Porpoises

1. Ultrasound is sound of frequency above the human hearing limit. 2. Porpoises, like dolphins, produce ultrasonic clicks for echolocation. 3. Hence porpoises can produce ultrasound. _Source: RRB Group D CEN-02/2018 PYQ, Q.84._

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