Question

1. So far you have been using strings as the medium of wave oscillation. Now we will use air, which carries sound waves. You are given a plastic tube open at both ends. If your tube is less than 0.6m in length, look for an unused tube in another lab table and use that instead. You also have a speaker from which you can hear sound waves at different frequencies. Keep one end of the tube near the speaker. The sound waves coming out of the speaker set up standing waves in the tube. As the frequency of the sound is changed, the amplitude changes. At certain frequencies, you can hear a very loud sound. This is the phenomenon of resonance, in which a standing wave is formed inside the tube.

2. Perform the necessary measurement and predict the frequencies at which a resonance standing wave will be formed.

Answer 1