The correct answer is:
C. The speed of light waves changes as the waves move from one media to another.
This causes the bending of light, known as refraction, which creates the illusion of the pencil appearing broken at the water's surface.
Use the illustration of a cup of water with a straight pencil placed in it to answer the question.
Information
IllustrationShort description, Illustration,Long description,
The pencil in a half full cup of water leans against the edge of the cup. The bottom half of the pencil that is in the water appears shifted to one side of the top half of the pencil that is out of the water.
Question
What causes the refraction of light that creates the illusion of a broken pencil?
Answer options with 4 options
A.
The light waves undergo interference as they enter the water.
B.
The water is more transparent than air and allows light to be absorbed.
C.
The speed of light waves changes as the waves move from one media to another.
D.
The light waves are reflected off the surface of the water into the eye of the viewer.
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