Question

exam lesson name: light and sound
exam number: 700699rr
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question 12 of 20 :
select the best answer for the question.

1. if a light wave hits a smooth surface at an angle of incidence of 40 degrees, the angle of reflection is

○ a. 80 degrees.
○ b. 90 degrees.
○ c. 40 degrees.
○ d. 0 degrees.

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Explanation:

The law of reflection states that the angle of incidence is equal to the angle of reflection when a light wave hits a smooth surface. Here, the angle of incidence is 40 degrees, so the angle of reflection should also be 40 degrees.

Answer:

C. 40 degrees.