34. Wave Optics
34. Wave Optics / Diffraction / Problem 1
A music practice room has an entrance consisting of two doorways, each 1.1 m wide and separated by a distance of 3.1 m. Outside the practice room, a tuning fork is struck in the hallway, producing a sound wave with a frequency of 512 Hz.
(i) Find all the angles of θ at which no sound will be heard within the practice room when the tuning fork is struck.
(ii) If a student is standing inside of the practice room as illustrated below when the tuning fork is struck outside of the room, will the student have a good explanation for not hearing the sound? Explain.
Assuming that the speed of sound is 340 m/s and that it has not bounced off the walls inside of the room.
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