The persistence of sound in an auditorium is the result of repeated reflections of sound and is called . . . . . . . .
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Physics GK · all questionsSounds waves and Motion
Sounds waves and Motion
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The tolerable limit of noise for human being is around
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Ultrasonic waves of frequency 3 × 105 Hz are passed through a medium, where speed of sound is 10 times that in air (speed of sound in air is 300 m/s). The wavelength of this wave in that medium will be of the order of
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Consider the following statements.
1. A flute of smaller length produces waves of lower frequency.
2. Sound travels in rocks in the form of longitudinal elastic waves only.
Which of the statements given above is/are correct?
1. A flute of smaller length produces waves of lower frequency.
2. Sound travels in rocks in the form of longitudinal elastic waves only.
Which of the statements given above is/are correct?
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A bomb explodes on the moon. You will heard its sound on earth after . . . . . . . .
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The frequency of ultrasound wave is typically
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The loudness of sound depends upon the
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Speeds greater than the speed of sound in air are known as . . . . . . . .
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Which one of the following statement(s) is/are not correct?
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The word radar is derived from?
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In any medium, the speed of sound increases, as we increase . . . . . . . .
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A sound source sends a wave of 600 Hertz. This produces a wavelength of 3 m. Speed of sound wave in this question is . . . . . . . .
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Which of the following is the unit of perceived loudness of sound?
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For humans, the audible waves are those that:
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If the distance between a crest and its consecutive trough for a sound wave is L, then its wavelength is given by
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Velocity of sound in air
1. Decreases with temperature
2. Increases with temperature
3. Increases with pressure
4. Is independent of pressure
which of the above the true?
1. Decreases with temperature
2. Increases with temperature
3. Increases with pressure
4. Is independent of pressure
which of the above the true?
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Velocity of sound in air does not change with the change of
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The frequency of a sound wave is 50 Hz and its wavelength is 4 meters. What is the speed of sound wave?
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A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is
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Which one of the following is the effect of the flight of supersonic jet?
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