Study of Sound — Practice Quiz
Maharashtra Board · Class 9 · Science
Try a 4-question quiz on Study of Sound for Maharashtra Board Class 9 Science: tap an answer to check it and see why.
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Quick Quiz: Study of Sound
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What type of waves are sound waves?
The formula for velocity of sound is:
Sound travels fastest in:
What is the audible range of human hearing?
Sample Questions
Which mediums can sound travel through?
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Solids, Liquids, Gases
Sound requires a material medium to travel. It can propagate through solids, liquids, and gases but cannot travel through vacuum as there are no particles to vibrate.
Which factors affect the velocity of sound in gases?
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Temperature, Density, Molecular weight
Sound velocity in gases depends on temperature (directly), density (inversely), and molecular weight (inversely). Color and pressure at constant temperature don't affect it.
Infrasound has frequency:
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Below 20 Hz
Infrasound refers to sound waves with frequencies below 20 Hz, which are below the human audible range.
An echo is heard when sound is:
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Reflected
An echo is produced when sound waves are reflected from a surface back to the listener, creating a repetition of the original sound.
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