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प्रश्न
What is the noise? Give an example.
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उत्तर
Noise is a harsh and unpleasant sound produced by a body making a succession of irregular and discontinuous disturbances, e.g., a sound produced by a stone thrown on a thin sheet, the thunder of lightning, etc.
संबंधित प्रश्न
Name one property of waves that do not change when the wave passes from one medium to another.
Figure shows two jars A and B containing water up to different heights. Which will produce sound of higher pitch when air is blown on them?
The frequencies of notes given by flute, guitar and trumpet are respectively 400 Hz, 200 Hz and 500 Hz. Which one of these has the highest pitch?
How does the two sounds of same loudness and same pitch produced by different instruments differ? Draw diagrams to illustrate your answer.
Name musical instrument, one in each case, which produces its notes by using the following. In each case state the method used to produce notes of different pitches and loudness.
(a) A vibrating string.
(b) A vibrating column air.
(c) Vibration of any other body.
How do you account for the fact that two strings can be used to give notes of the same pitch and loudness but of different quality?
The same musical note when played on a piano and when played on a flute sounds different.
What is meant by the ‘loudness’ of a sound? How is it related to the intensity?
Give a scientific reason.
The sounds generated by a tabla and a sitar are different.
