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प्रश्न
The following diagram shows three ways in which the string of an instrument can vibrate.
(a) which of the diagram shows the principal note?
(b) which has the frequency four times that of the first?
(c) what is the ratio of the frequency of the vibration in (i) and (ii)?
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उत्तर
(a) (i) Diagram is showing the principal note.
(b) (iii)Diagram has frequency four times that of the first.
(c) Ratio is 1:2
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