Question

Name one factor which affects the frequency of sound emitted due to vibration in an air column.

Answer 1

1. Due to vibrations in an air column, the frequency of sound output gets affected due to the length of the air column.
2. Frequency $f\propto \frac{1}{l}$
   Where, $f$ is the frequency and $l$ is the length of air column
3. The above equation states that frequency($f$) is inversely proportional to length($l$) of the air column.
4. So, the frequency decreases, when the length of the air column increases.

Therefore, one of the factors which affect the frequency of sound emitted due to vibration in an air column is the length of the air column.