Plane waves through a narrow gap emerge as circ... - WAEC Physics 2017 Question
Plane waves through a narrow gap emerge as circular waves. This phenomenon is known as
A
interference
B
dispersion
C
refraction
D
diffraction
correct option: d
Diffraction refers to the various things that occur when a wave encounters an obstacle. This bending of the wave after it passes a small gap is an example of diffraction.
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