Grade 12 Physics: The Nature of Light
This worksheet covers fundamental concepts of light, including its wave-particle duality, electromagnetic spectrum, reflection, refraction, and diffraction, suitable for Grade 12 physics students.
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Grade 12 Physics: The Nature of Light
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Read each question carefully and answer to the best of your ability. Show all your work for calculation-based problems.
1. Which phenomenon best supports the wave nature of light?
Photoelectric effect
Diffraction
Blackbody radiation
Compton effect
2. Which color of visible light has the longest wavelength?
Blue
Green
Red
Violet
3. The bending of light as it passes from one medium to another is called .
4. Light is an electromagnetic wave, meaning it does not require a to propagate.
5. The phenomenon where light waves spread out as they pass through an aperture or around an obstacle is known as .
6. White light is composed of all colors of the visible spectrum.
True
False
7. The speed of light is constant in all mediums.
True
False
8. Explain the concept of wave-particle duality of light. Provide one example for each nature (wave and particle).
9. Describe how a prism separates white light into its constituent colors. Refer to the diagram below.
Match each term with its correct definition.
10. Reflection
a. Bending of light as it passes through an opening.
11. Refraction
b. Bouncing back of light from a surface.
12. Diffraction
c. Bending of light as it passes from one medium to another.