Physics
The sound box of a musical instrument is so constructed that the air column inside it has a natural frequency …………… that of the string stretched in it.
- greater than
- smaller than
- equal to
- cannot say
Sound
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Answer
equal to
Reason — When the natural frequency of the air column inside the sound box matches the frequency of the vibrating string, resonance occurs. This resonance enhances the sound produced by the vibrating string, making it louder and richer.
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Related Questions
A body is vibrating under the influence of an external periodic force of frequency exactly equal to the natural frequency of the vibrations of the body. It executes :
- damped vibrations
- forced vibrations
- resonant vibrations
- natural vibrations
At resonance, a loud sound is heard because the body vibrating with a large …………… sends forth a large amount of energy in the medium.
- amplitude
- frequency
- wavelength
- time period
(a) Name one factor on which the frequency of sound emitted due to vibration in an air column depends.
(b) How does the frequency depend on the factor stated in part (a)?
State one way of increasing the frequency of a note produced by an air column.