phyiscs quiz 4 smith

phyiscs quiz 4 smith - Quiz Ch. 22 Name_ 1pm Version A...

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Quiz Ch. 22 1pm Version A Name___________________________________ NOTE: You get + 1 point for each correct answer and - 0.25 points for each incorrect answer. It is not advantageous to fill in a guess for the answer unless you can eliminate more than one wrong answer. MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) What is a ʺ ray ʺ of light? A) A section of light of just a few wavelengths B) An arrow pointing the direction of travel of the light wave C) A surface passing through points of a wave that have the same phase and amplitude D) The portion of a light wave that enters a material E) None of the above 1) 2) A laser beam is reflected from a mirror with an angle of incidence of 60 degrees. What is the angle between the reflected beam and the mirror? A) 30 degrees B) 60 degrees C) 1.0 radians D) 1.6 radians E) None of the above 2) 3) Why is the angle of incidence equal to the angle of reflection when light reflects from a smooth mirror? A) Because the reflection is diffuse B) Because a ray of light travels in a straight line path until it encounters a boundary
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phyiscs quiz 4 smith - Quiz Ch. 22 Name_ 1pm Version A...

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