two notes wich have frequency ratio 2:1 are said to be separated by an octave.A frequency wich is separated by an octave from middle C(256Hz) is?

512 hz

To determine a frequency that is separated by an octave from middle C (256Hz), we need to find a frequency that has a frequency ratio of 2:1 with respect to middle C.

An octave represents a doubling of the frequency. In other words, when we move one octave higher, the frequency doubles, and when we move one octave lower, the frequency halves.

Given that middle C (C4) has a frequency of 256Hz, we can find the frequency that is one octave higher (C5) using the following equation:

Frequency of C5 = Frequency of C4 * 2

Substituting the value of C4, we get:

Frequency of C5 = 256Hz * 2 = 512Hz

Therefore, a frequency separated by an octave from middle C is 512Hz (C5).