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प्रश्न
Give one use of ultrasound in industry and one in hospitals.
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उत्तर
Ultrasound has following uses:
(i) Ultrasound is used in industry for detecting flaws in metal blocks without damaging them.
(ii) Ultrasound is used in hospitals as a medical checkup to investigate the internal organs of the human body such as liver, kidneys, and uterus.
(iii) Ultrasound is used to monitor the growth of fetus inside the mother’s uterus.
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संबंधित प्रश्न
Give two practical applications of reflection of sound waves.
How is ultrasound used for cleaning?
Name the three characteristics of sound.
Name the characteristic of sound which depends on (a) amplitude (b) frequency, and (c) waveform.
What happens to the pitch of a sound if its frequency increases ?
Draw labelled diagrams to represent (a) soft sound, and (b) loud sound, of the same frequency.
What is meant by the quality (or timbre) of sound ? On what factor does the quality (or timbre) of a sound depend ?
Name an animal which navigates and finds food by ecolocation.
Which of the two produces ultrasonic waves : porpoise or whale ?
What is sonar ? Explain its use.
