College Physics 10th Edition by Raymond Serway,Chris Vuille

Exercise 85

In a location where the speed of sound is 354 m/s, a 2 000-Hz sound wave impinges on two slits 30.0 cm apart. (a) At what angle is the first maximum located (b) If the sound wave is replaced by 3.00-cm microwaves, what slit separation gives the same angle for the first maximum (c) If the slit separation is 1.00 m, what frequency of light gives the same first maximum angle