Question

If the length of the air column in the test tube is 14.0 cm, what is the frequency of this standing wave?

Answer 1

f = 614.28 Hz

Step-by-step explanation:

Given that, the length of the air column in the test tube is 14.0 cm. It can be assumed that the speed of sound in air is 344 m/s. The test tube is a kind of tube which has a closed end. The frequency in of standing wave in a closed end tube is given by :

`f=(nv)/(4l)`

`f=(1* 344)/(4* 0.14)`

f = 614.28 Hz

So, the frequency of the this standing wave is 614.28 Hz. Hence, this is the required solution.