Chapter 24, Problem 9Q

To determine

To compare: The double-slit experiment for sound waves to that of light waves.

Explanation of Solution

Introduction:

For the demonstration of the light’s wave like behavior, an experiment called the double slit experiment was conducted which depicts both wave and particle characteristics of light and matter. Since, sound is a wave so Young’s double slit experiment was applicable for sound waves as well.

Similarities:

• For both sound waves and light waves, a source of single frequency works well.
• For the interference pattern that has to be observed, the sources must be coherent in both cases.
• At some distance away from the slits, a pattern is observed in both the cases. In case of light waves (dark and bright fringes) while in case of sound wave (high and low intensity).

Differences:

• The difference between the both cases is that the slits in case of light waves should be much closer than that in the case of sound waves.