Physical Optics Principles
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Questions and Answers

What does the word 'physical' imply in the context of physical optics?

  • It is more physical than geometric or ray optics (correct)
  • It ignores wave effects
  • It is a precise theory
  • It is an exact physical theory

    • What does physical optics study in optics?

  • Interference, diffraction, and polarization (correct)
  • Coherence theory
  • Geometric optics
  • Quantum noise in optical communication

    • What does the physical optics approximation consist of?

  • Ignoring wave effects in estimating diffraction
  • Modeling only interference effects
  • Applying full wave electromagnetism to estimate diffraction effects
  • Using ray optics to estimate the field on a surface and then integrating that field over the surface to calculate the transmitted or scattered field (correct)

    • What does coherence theory study in relation to optical communication?

    <p>$Quantum noise$</p> Signup and view all the answers

    In which frequency range is the physical optics approximation often more accurate in optics than for radio?

    <p>$High-frequency$</p> Signup and view all the answers

    What is the principle of superposition of waves?

    <p>The resultant amplitude at a point is the vector sum of the amplitudes of the individual waves</p> Signup and view all the answers

    What happens when a crest of one wave meets a trough of another wave?

    <p>Destructive interference occurs</p> Signup and view all the answers

    What does interference refer to in physics?

    <p>Combining two coherent waves by adding their intensities or displacements with consideration for their phase difference</p> Signup and view all the answers

    What did Thomas Young coin in 1801 related to interference?

    <p>'Interference'</p> Signup and view all the answers

    In constructive interference, what happens when two waves are in phase?

    <p>The resultant wave has greater intensity</p> Signup and view all the answers

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