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प्रश्न
The ultrasound waves can penetrate into matter to a large extent because they have :
पर्याय
very high speed
very high frequency
very high wavelength
very high amplitude
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उत्तर
Ultrasound waves can enter the metal surfaces because of their high frequency.
(b) Very high frequency.
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संबंधित प्रश्न
Give two practical applications of reflection of sound waves.
Name the three characteristics of sound.
Name the unit used to measure the loudness of sound. Also write its symbol.
Name the characteristic of sound which can distinguish between the 'notes' (musical sounds) played on a flute and a sitar (both the notes having the same pitch and loudness).
Write the full name of 'SONAR'.
Fill in the blank with suitable word :
Loudness of sound depends on .....................
Write any three applications (or uses) of ultrasound.
What is sonar ? Explain its use.
A sonar station picks up a return signal after 3 seconds. How far away is the object ? (Speed of sound in water = 1440 m/s).
Expand the abbreviation of the term SONAR.
