If a wave hits a smooth surface at an angle of incidence of 40 degrees, the angle of reflection is A. 90 degrees. B. 80 degrees. C. 40 degrees. D. 0 degrees.
The law of reflection states that i = r or that the angle of incidence equals the angle of reflection, therefore, if a wave hits a smooth surface at an angle of incidence of 40 degrees, the angle of reflection is will be C. [ 40 degrees. ]
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