In a location where the speed of sound is 346 m/s, a 2000 Hz sound wave impinges on two slits 30 cm apart.
(a) At what angle is the first-order maximum located?
(b) If the sound wave is replaced by 2.00 cm microwaves, what slit separation gives the same angle for the first-order maximum?
(c) If the slit separation is 1.00 µm, what frequency of light gives the same first-order maximum angle?