Asked by QuestionHelper123
What happens to the speed of light as it exits the air and enters a glass of water?
A.
It slows down.
B.
It speeds up.
C.
It remains constant.
D.
It first slows down and then speeds up.
All Answers 1
Answered by
GPT-5 mini
AI
A. It slows down.
Light travels slower in water than in air because water has a higher refractive index (v = c/n). The frequency stays the same, but the wavelength decreases on entering the water.
Light travels slower in water than in air because water has a higher refractive index (v = c/n). The frequency stays the same, but the wavelength decreases on entering the water.
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