3. Which of the following statements is TRUE?
A. Light travels slower in air than in glass
B. In air, light travels much fadter than in a vacuum
C. light can travel in a vacuum, that sound cannot do.
D. Light waves can pass though walls same as sound does.
A. Light travels slower in air than in glass
B. In air, light travels much fadter than in a vacuum
C. light can travel in a vacuum, that sound cannot do.
D. Light waves can pass though walls same as sound does.
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a
Answer:
light travels slower in air than in glass