The phenomenon of the bending of sound waves around obstacles is known as:
Diffraction
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Sound waves with frequency greater than 20 kHz are called .
ultrasound
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Which of the following is not a characteristic of a sound wave?
Color
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The loudness of a sound depends upon
amplitude
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An example of a mechanical wave is:
Sound wave
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The speed of sound in air is approximately:
343 meters per second
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The persistence of sound after the source has stopped is known as:
Reverberation
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The velocity of sound is inversely proportional to the .
square root of density
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SI unit of is Hertz (Hz).
frequency
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What type of wave is sound?
Longitudinal wave
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The distance between two consecutive compressions or rarefactions is called:
Wavelength
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The phenomenon of persistence of sound due to multiple reflections is called:
Reverberation
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The part of the ear that amplifies sound vibrations is called the:
Ossicles
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The quality of sound that enables us to distinguish between two sounds of the same pitch and loudness is called:
Timbre
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The minimum distance between a source and a reflecting surface to hear an echo is:
20 meters
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The speed of sound is maximum in:
Steel
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Which type of wave does not require a medium for propagation?
Radio wave
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….... are used in sonography.
high frequency ultrasound
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The ….............. receives the vibrations coming from the membrane and converts them into electrical signals which are sent to the brain through the nerve
cochlea
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Sound will not travel through .
vacuum
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Which of the following is a musical instrument that produces sound by vibrating strings?
Guitar
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The unit of frequency is
Hertz
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The part of the ear responsible for maintaining balance is the:
Semicircular canals
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In which medium does sound travel the fastest?
Solid
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The number of vibrations per second is called:
Frequency
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The normal hearing range for humans is
20 Hz to 20,000 Hz
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Which of the following is required for the propagation of sound?
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