00:01
So in this question, we have a string and there are a couple of standing -rude on it.
00:05
We say that for a particular string, one harmonic frequency is 325 hertz.
00:12
And the next highest harmonic function is harmonic frequency is 390 hertz.
00:18
So they are adjacent ones.
00:20
And then we ask if we have a harmonic frequency of 195 hertz, what is the next highest one? next higher one.
00:29
So how do you find this? we can find this by looking for the relationship between different ends.
00:38
So we know that, i'm sorry, so we know for a string of less l, if they are, for each mode with mode number n, we have a wavelength of 2l over n.
00:56
So the the largest wavelength is 2l, the next largest one is l, the next much larger percent is 2l over 3, etc...