2763

Physics Waves And Oscillations Level: High School

Diffraction

For a diffraction horn loudspeaker , the sound emerges through a rectangular opening . The opening of a diffraction horn has a width of 0.15 m . If the speaker emits a continuous tome with a wavelength of 0.11 m , at what angle does the first minimum occur ?

a) 47 degree

b) 39 degree

c) 23 degree

d) 12 degree

e) 8.4 degree