Electromagnetic Waves and Interference
A Grade 12 physics worksheet covering electromagnetic waves, their properties, and interference phenomena.
Includes
Standards
Electromagnetic Waves and Interference
Name:
Date:
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Read each question carefully and answer to the best of your ability. Show all your work for calculations.
1. Which of the following statements about electromagnetic waves is INCORRECT?
They are transverse waves.
They require a medium for propagation.
They travel at the speed of light in a vacuum.
They consist of oscillating electric and magnetic fields.
2. Which phenomenon demonstrates the particle nature of electromagnetic radiation?
Diffraction
Interference
Photoelectric effect
Polarization
3. The electromagnetic spectrum ranges from low-frequency radio waves to high-frequency rays.
4. When two waves meet in phase, their amplitudes add up, resulting in interference.
5. Young's double-slit experiment provides evidence for the nature of light.
6. All electromagnetic waves travel at the same speed in any given medium.
True
False
7. Destructive interference occurs when the crest of one wave meets the trough of another wave.
True
False
8. Describe the relationship between the frequency and wavelength of an electromagnetic wave.
9. Explain the principle of superposition as it applies to wave interference.
10. Refer to the image below showing the electromagnetic spectrum. Identify two types of electromagnetic waves that have longer wavelengths than visible light and two types that have shorter wavelengths than visible light.
Longer wavelengths than visible light: ,
Shorter wavelengths than visible light: ,