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Questions and Answers
What colors make up the visible spectrum of light?
What colors make up the visible spectrum of light?
- Red, yellow, green, blue, violet
- Red, orange, green, blue, violet
- Red, orange, yellow, green, blue, indigo, violet (correct)
- Orange, yellow, green, blue, indigo, violet
What is the speed of light in a vacuum?
What is the speed of light in a vacuum?
- 200,000,000 meters per second
- 300,000,000 meters per second
- 299,792,458 meters per second (correct)
- 250,000,000 meters per second
What is the primary function of the lens in the human eye?
What is the primary function of the lens in the human eye?
- To focus light onto the retina (correct)
- To perceive color in the environment
- To protect the eye from dust and debris
- To control the amount of light entering the eye
Study Notes
Visible Spectrum of Light
- The visible spectrum of light consists of seven colors: red, orange, yellow, green, blue, indigo, and violet.
- These colors are also commonly referred to as ROY G BIV.
Speed of Light
- 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).
Human Eye Function
- The primary function of the lens in the human eye is to focus light onto the retina, allowing for clear and sharp vision.
- The lens changes shape to accommodate near or far vision, adjusting its curvature to focus light correctly.
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Description
Test your knowledge of light with this quiz for class 8 students. Explore the speed of light in a vacuum, the colors that make up the visible spectrum, and the primary function of the lens in the human eye. See how much you know about this fascinating topic!
