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Physics Review Question Unit: Waves Year: 1990 Question#: 52 Question: The spreading of a wave into a region behind an obstacle is known as (1 ) diffusion (2 ) dispersion (3 ) refraction (4 ) diffraction What is this question really asking? Explanation by: Adam C. [ Return to question menu ] Answer 1 diffusion INCORRECT Diffusion is the spreading of particles, not waves return to top Answer 2 dispersion INCORRECT Dispersion says different colors of light will get bent at different angles in different mediums. It has nothing to do with the spreading of waves. return to top Answer 3 refraction INCORRECT Refraction is the bending of waves as they hit a new medium. return to top Answer 4 diffraction CORRECT Diffration is the spreading of a wave behind an obstacle. return to top What's this question really asking? It's asking the definition of diffraction. return to top |
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