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प्रश्न
The sketches I to IV in Fig. show sound waves, all formed in the same time interval. Which diagram shows a note from a musical instrument?
पर्याय
I
II
III
IV
MCQ
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उत्तर
IV
Explanation:
A musical note has a regular and periodic waveform. Diagram IV represents a complex periodic wave produced by a musical instrument. Diagram III is irregular and represents noise, while I and II are simple periodic waves rather than the musical-note waveform intended here.
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