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Questions and Answers
What is the speed of light in a vacuum?
What is the speed of light in a vacuum?
- 500,000,000 meters per second
- 1,000,000,000 meters per second
- 100,000,000 meters per second
- 299,792,458 meters per second (correct)
What happens when light passes from air into water?
What happens when light passes from air into water?
- It does not bend
- It splits into multiple colors
- It bends towards the normal (correct)
- It bends away from the normal
What is the primary color of light?
What is the primary color of light?
- Red
- Yellow
- White (correct)
- Green
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Study Notes
Light Fundamentals
- The speed of light in a vacuum is approximately 299,792,458 meters per second (m/s) or 186,282 miles per second (mi/s).
Refraction of Light
- When light passes from air into water, it bends or changes direction due to the difference in density between the two mediums, a phenomenon known as refraction.
Light Properties
- The primary colors of light are Red, Blue, and Green, often referred to as RGB, which can combine to produce a wide range of colors.
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