1.

The sketches I to IV in Fig. 7.26 show sound waves, all formed in the same time interval. Which diagram shows (i) a note from a musical instrument, (ii) a soft (or feeble) note, (iii) a bass (or low frequency) note.

Answer»

The sketches I to IV in Fig. 7.26 show sound waves, all formed in the same time interval.

Which diagram shows

(i) a note from a musical instrument,

(ii) a soft (or feeble) note,

(iii) a bass (or low frequency) note.



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