EASY
Earn 100

Draw a displacement-time graph of a longitudinal wave.

Important Questions on Waves and Sound

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Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
A boat at anchor is rocked by waves whose crests are 100 m apart and whose velocity is 25 m s-1. How often do the crests reach the boat in? Choose the correct answer.
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Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
In the curve shown in the figure, half the wavelength is 
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Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
If five waves are produced in one second, then the time period of one wave is
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Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
In the curve shown in figure, half the wavelength is 
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Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
The level of normal conversation is about _____ dB.
MEDIUM
Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
In the sound wave produced by a vibrating tuning fork shown in the diagram, half the wavelength is represented by:
Picture 8
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Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
A low note has a time period of 0.0125 s. What is its frequency?
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Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
The frequency of a source of sound is 256 Hz. It vibrates _____( 512 / 256) times in a second.
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Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
When we change feeble sound to loud we increase its
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Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
The amplitude of a wave is a measure of its
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Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
Children under the age of 5 can hear up to _____.
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Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
Distance between two adjacent crests is
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Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
The SI unit of frequency is 
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Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
The figure below shows snapshots of the pressure variation in two different sound waves in air plotted against position. Both the figures are drawn to the same scale.
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Which of the following statements is true?
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Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
The distance between two consecutive compressions of a sound wave is 5 cm. The wavelength of the wave is.
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Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
When the pitch of the note produced by a harmonium is lowered, then the wavelength of the note:
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Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
Frequency×Time period = _____. (seconds/ per seconds/ one)
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Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
Frequency×Time period= _____.
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Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
The distance between two successive rarefaction is called
MEDIUM
Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
Speed (v), wavelength (λ) and frequency (ν) of sound are related as _________.