Select all that apply.
a column of air in a tube is vibrating at its fundamental frequency of 150hz. which of the following frequencies could also exist in the tube as harmonics?
- 75 hz
- 225 hz
- 300 hz
- 450 hz

-300 Hz

-450 Hz

Explanation:

As we know that frequency of nth harmonic mode is known as

now we know that for fundamental mode of frequency we will have

n = 1

so we will have

now given that

and also we have

n = integer

so we will have

n = 2

n = 3

well clustered together.

points close on a scatter diagram