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Questions and Answers
What is the primary form of electromagnetic radiation that is essential for almost all life on Earth?
What is the primary form of electromagnetic radiation that is essential for almost all life on Earth?
- Visible light (correct)
- Gamma radiation
- Infrared radiation
- Ultraviolet radiation
What is the primary characteristic of light that enables us to see objects?
What is the primary characteristic of light that enables us to see objects?
- It is a form of mechanical energy
- It is a stream of tiny particles
- It is a type of sound wave
- It is a wave motion (correct)
Who is credited with the first clear demonstration of the wave nature of light?
Who is credited with the first clear demonstration of the wave nature of light?
- Thomas Young (correct)
- Christian Huygens
- Isaac Newton
- Albert Einstein
What is the range of electromagnetic radiation that is visible to the human eye?
What is the range of electromagnetic radiation that is visible to the human eye?
What is the term used to describe the transfer of energy from the source to the observer through light?
What is the term used to describe the transfer of energy from the source to the observer through light?
Who was the chief architect of the particle theory of light?
Who was the chief architect of the particle theory of light?
What is the type of wave generated by sources of light that spread radially outwards equally in all directions?
What is the type of wave generated by sources of light that spread radially outwards equally in all directions?
What is the speed of light in a vacuum, approximately?
What is the speed of light in a vacuum, approximately?
What is the characteristic of EM waves that makes them able to travel without a medium?
What is the characteristic of EM waves that makes them able to travel without a medium?
What is the relationship between frequency and wavelength of EM waves?
What is the relationship between frequency and wavelength of EM waves?
What is the term for the entire range of EM waves in order of increasing frequency and decreasing wavelength?
What is the term for the entire range of EM waves in order of increasing frequency and decreasing wavelength?
What is the nature of light in some situations?
What is the nature of light in some situations?
What is the range of wavelengths of visible light?
What is the range of wavelengths of visible light?
What is the order of colors in the visible light spectrum from longest wavelength to shortest?
What is the order of colors in the visible light spectrum from longest wavelength to shortest?
What is the frequency of visible light compared to infrared waves?
What is the frequency of visible light compared to infrared waves?
What is a characteristic of visible light in the EM spectrum?
What is a characteristic of visible light in the EM spectrum?
What is the range of frequencies of visible light?
What is the range of frequencies of visible light?
What is unique about visible light in the EM spectrum?
What is unique about visible light in the EM spectrum?
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