Question

the diagram shows a wave passing through a barrier with a very small gap
what would most likely happen if the gap in the barrier was made larger?
a the amount of diffraction would increase because the opening in the barrier is larger than the wavelength.
b the amount of diffraction would decrease because the opening in the barrier is larger than the wavelength
c the amount of diffraction would increase because the opening in the barrier is smaller than the wavelength.
d the amount of diffraction would decrease because the opening in the barrier is smaller than the wavelength

Explanation:

Diffraction of waves is most pronounced when the size of the gap is comparable to or smaller than the wavelength of the wave. When the gap is made larger than the wavelength, the spreading (diffraction) of the wave through the gap decreases significantly.

Answer:

B. The amount of diffraction would decrease because the opening in the barrier is larger than the wavelength.