20. If a wave hits a smooth surface at an angle of incidence of 40 degrees, the angle of reflection is A. 90 degrees. B. 0 degrees. C. 80 degrees. D. 40 degrees.
If a wave hits a smooth surface at an angle of incidence of 40 degrees, the angle of reflection is 40 degrees.
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Asked 7/20/2018 7:12:54 PM
Updated 6/25/2020 2:55:02 PM
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