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प्रश्न
What is vibration?
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उत्तर
Vibration means a kind of rapid to and from motion of an object
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संबंधित प्रश्न
What is sound and how is it produced?
Fill in the blank.
Sound is produced when a body ______.
The frequency of a source of sound is 100 Hz. How many times does it vibrate in a minute?
What is the name of the strings which vibrate in our voice box when we talk?
What will be the change in the wavelength of a sound wave in air if its frequency is doubled?
Give reason for the following :
In most of the cases, we cannot see the vibrations of a sound producing object with our eyes.
A sound producing body is at considerable distance from a man. There can be four different media W, X, Y and Z between the sound producing body and the man. The medium X brings the sound to man most quickly whereas medium Z takes the maximum time. The time taken by medium W in bringing sound to man is less than that of X but more than that of Z. The medium Y, however, fails to bring the sound from the sound producing body to the man. Which medium could be the one :
(a) having on fixed shape and no fixed volume?
(b) having a fixed volume but no fixed shape?
(c) having the same composition as that on the moon?
(d) having a fixed shape and a fixed volume?
A musical instrument is producing a continuous note. This note cannot be heard by a person having a normal hearing rang. This note must then be passing through.
Figure X shows a trace of a sound wave produced by a particular tuning fork :
(a) On the graph paper given in Figure Y, draw a trace of the sound wave which has a higher frequency than that shown in figure X.
(b) On the graph paper show in Figure Z, draw a trace of the sound wave which has a larger amplitude than that shown in Figure X.
How are different sound notes generated in musical instruments like guitar, which uses strings for sound generation, and flute, which uses blown air for sound generation?
