Concept explainers
How can you convince your friend that a beam of light from a laser pointer travels to a wall along a. straight line?
a. Tell him that light rays travel in straight lines.
b. Sprinkle chalk dust along the laser beam.
c. Try to move along the laser beam blocking its light and note the light path.
d. Both b and c will work.
e. All answers a-c will work.
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Modified Mastering Physics with Pearson eText -- Access Card -- for College Physics: Explore and Apply (18-Weeks)
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