d 5 reflections refer back to the handout in question c for example sk
D.  Reflections – Refer back to the handout in Question C for example sketches
a. [0.5] Both specular and diffuse reflections are possible when sound is incident on the surface shown above. Which wavelengths, in terms of the dimensions given, will result in the most diffuse reflections? In other words, would wavelengths much larger than a and b, about the same size as a and b, and/or wavelengths much smaller than a and b result in the most diffuse reflections. b. [0.5] Which wavelengths in terms of the dimensions given, will result in specular reflections? (See options in part (a)). c.  If a = 15 cm, which frequency will result in the most diffuse reflections? Include a sketch of the irregular surface with an incoming sound wave and the reflected sound wave(s) for this frequency. d.  If a = 15 cm and b = 20 cm, and sound waves with a frequency of 100 Hz were to interact with the surface, what type of reflections would result? Include a sketch of the irregular surface with an incoming sound wave and the reflected sound wave(s) for this frequency.
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