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Questions and Answers
What is the speed of light in vacuum?
What is the speed of light in vacuum?
- 30,000,000 m/s
- 299,792,458 m/s (correct)
- 299,792 m/s
- 3,000,000,000 m/s
Which wavelengths are usually defined as visible light?
Which wavelengths are usually defined as visible light?
- 400–700 nanometres (correct)
- 50–150 nanometres
- 800–1000 nanometres
- 100–300 nanometres
What are the primary properties of light?
What are the primary properties of light?
- Frequency, amplitude, speed, and refraction
- Intensity, propagation direction, frequency or wavelength spectrum, and polarization (correct)
- Color, speed, temperature, and reflection
- Energy, mass, velocity, and refraction index
What are photons?
What are photons?
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What is the main source of natural light on Earth?
What is the main source of natural light on Earth?
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