Physical Optics Lecture 1: Wave Nature of Light
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Questions and Answers

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?

  • 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?

  • Thomas Young (correct)
  • Christian Huygens
  • Isaac Newton
  • Albert Einstein

    • What is the range of electromagnetic radiation that is visible to the human eye?

    <p>Visible light only</p> Signup and view all the answers

    What is the term used to describe the transfer of energy from the source to the observer through light?

    <p>Energy transfer</p> Signup and view all the answers

    Who was the chief architect of the particle theory of light?

    <p>Isaac Newton</p> Signup and view all the answers

    What is the type of wave generated by sources of light that spread radially outwards equally in all directions?

    <p>Spherical wave</p> Signup and view all the answers

    What is the speed of light in a vacuum, approximately?

    <p>3.00 x 10^8 m/s</p> Signup and view all the answers

    What is the characteristic of EM waves that makes them able to travel without a medium?

    <p>Ability to travel through a vacuum</p> Signup and view all the answers

    What is the relationship between frequency and wavelength of EM waves?

    <p>Higher frequency means shorter wavelength</p> Signup and view all the answers

    What is the term for the entire range of EM waves in order of increasing frequency and decreasing wavelength?

    <p>Electromagnetic spectrum</p> Signup and view all the answers

    What is the nature of light in some situations?

    <p>Both wave-like and particle-like</p> Signup and view all the answers

    What is the range of wavelengths of visible light?

    <p>From 700 nm to 400 nm</p> Signup and view all the answers

    What is the order of colors in the visible light spectrum from longest wavelength to shortest?

    <p>Red, orange, yellow, green, blue, indigo, violet</p> Signup and view all the answers

    What is the frequency of visible light compared to infrared waves?

    <p>Higher</p> Signup and view all the answers

    What is a characteristic of visible light in the EM spectrum?

    <p>It is a very small part of the EM spectrum</p> Signup and view all the answers

    What is the range of frequencies of visible light?

    <p>Higher than infrared waves</p> Signup and view all the answers

    What is unique about visible light in the EM spectrum?

    <p>It is the only part of the EM spectrum that humans can see</p> Signup and view all the answers

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