Physical Optics: Wave Nature of Light
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Questions and Answers

What is the primary source of energy transfer in light?

  • The observer's eyes
  • The object being viewed
  • The surrounding environment
  • The source of light (correct)

    • What is the main characteristic of light that proves it is a wave?

  • It is visible to the human eye
  • It can be seen with the naked eye
  • It can interfere with other light rays (correct)
  • It travels in a straight line

    • What did Newton believe light was composed of?

  • Energy transfer
  • Electromagnetic radiation
  • Wave motions
  • Tiny particles (correct)

    • What phenomena depend on the properties of light?

    <p>Many natural phenomena like seeing a TV or computer monitor</p> Signup and view all the answers

    What was the significance of Thomas Young's experiment in 1801?

    <p>It demonstrated the wave nature of light</p> Signup and view all the answers

    What was the theory of light proposed by Christian Huygens?

    <p>Wave theory of light</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?

    <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 percentage of the electromagnetic spectrum is visible light?

    <p>A small part</p> Signup and view all the answers

    What is the effect of too much visible light on human skin?

    <p>It causes sunburn and skin cancer</p> Signup and view all the answers

    Who can see ultraviolet light?

    <p>Bees, bats, butterflies, and some small rodents and birds</p> Signup and view all the answers

    What is the speed of electromagnetic waves in a vacuum?

    <p>2.99792458 x 10^8 m/s</p> Signup and view all the answers

    What is the characteristic of electromagnetic waves that allows them to travel through a vacuum?

    <p>They are transverse waves</p> Signup and view all the answers

    What happens to the frequency of electromagnetic waves as their wavelength decreases?

    <p>It increases</p> Signup and view all the answers

    What is the term used to describe the entire range of electromagnetic waves in order of increasing frequency and decreasing wavelength?

    <p>The Electromagnetic Spectrum</p> Signup and view all the answers

    What is the characteristic of light that allows it to exhibit both wave-like and particle-like behavior?

    <p>Its dual nature</p> Signup and view all the answers

    What is the shape of the wavefronts of a point source of light?

    <p>Concentric spheres</p> Signup and view all the answers

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