A note has a frequency of 128 Hz. What i...

A note has a frequency of 128 Hz. What is the frequency of a note two octaves higher than it?

32 Hz

64 Hz

512 Hz

256 Hz

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The correct Answer is:

Octave corresponds to double the frequency. First octave of 128 Hz is 256 Hz and the octave of 256 is 512 Hz
Thus a frequency of 512 Hz is two octaves higher

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