Grade 12 Light Energy Worksheet
A comprehensive worksheet for Grade 12 physics students covering key concepts of light energy, including its wave-particle duality, electromagnetic spectrum, and optical phenomena.
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Grade 12 Light Energy Worksheet
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Read each question carefully and answer to the best of your ability. Show all calculations where applicable.
1. Which of the following phenomena best supports the wave nature of light?
Photoelectric effect
Diffraction
Compton effect
Blackbody radiation
2. In the electromagnetic spectrum, which type of radiation has the longest wavelength?
Gamma rays
X-rays
Radio waves
Ultraviolet light
3. The phenomenon where light bends as it passes from one medium to another is called .
4. Light is an wave, meaning it does not require a medium to travel.
5. The speed of light is constant in all reference frames.
True
False
6. The energy of a photon is directly proportional to its wavelength.
True
False
7. Explain the concept of wave-particle duality as it applies to light. Provide an example of a phenomenon that demonstrates each aspect.
8. Describe how a prism separates white light into its constituent colors. Refer to the diagram below in your explanation.
Match each term with its correct definition.
9. Photon
a. The process of light bouncing off a surface.
10. Refraction
b. A quantum of light or electromagnetic radiation.
11. Reflection
c. The bending of light as it passes from one medium to another.
12. Discuss the applications of different parts of the electromagnetic spectrum in modern technology and everyday life. Provide at least three distinct examples, explaining the type of radiation used and its specific application.
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