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प्रश्न
Write any three applications (or uses) of ultrasound.
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उत्तर
We have the following applications of ultrasound:
(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
Explain how bats use ultrasound to catch a prey.
Explain how defects in a metal block can be detected using ultrasound.
Name the unit used to measure the loudness of sound. Also write its symbol.
What type of scans are used these days to monitor the growth of developing baby in the uterus of the mother ?
Write the full name of 'SONAR'.
Draw labelled diagrams to represent (a) soft sound, and (b) loud sound, of the same frequency.
Draw labelled diagrams to represent sound of (a) low pitch, and (b) high pitch, of the same loudness.
Explain how, bats use ultrasound to catch the prey.
Define the following terms : (a) Echolocation (b) Echocardiography, and (c) Ultrasonography.
The ultrasound waves can penetrate into matter to a large extent because they have :
