Interference and Path Difference in Slit Experiments
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Questions and Answers

According to Huygens' principle, what are the wavelets formed by drawing a half-circle around each point on a wave called?

  • Half-circles
  • Circles
  • Curves
  • Wavelets (correct)

    • What is the term for the bending of a wave around an obstacle?

  • Diffraction (correct)
  • Interference
  • Diffusion
  • Reflection

    • What happens when waves interfere constructively?

  • The waves disappear completely
  • The waves combine into one wave with higher amplitude (correct)
  • The waves flatten out
  • The waves decrease in amplitude

    • According to Huygens' Principle, how can you predict a wave's position in the future?

    <p>By analyzing its current position</p> Signup and view all the answers

    What did 19th-century physicists discover about light through an experiment with a coin's shadow?

    <p>Light is a wave</p> Signup and view all the answers

    What did some scientists in the 17th and 18th centuries begin to think about light?

    <p>It might actually be a wave</p> Signup and view all the answers

    Which type of interference occurs when waves are an exact number of wavelengths apart, causing crests and troughs to line up?

    <p>Constructive interference</p> Signup and view all the answers

    What is the formula for calculating the path difference in a single slit experiment?

    <p>$d \cdot \sin(\theta)$</p> Signup and view all the answers

    What happens when the total path difference between the top and bottom of a single slit is equal to 1.5 wavelengths?

    <p>Constructive interference</p> Signup and view all the answers

    According to the text, what happens to the rays passing through the middle third and bottom third of the slit?

    <p>They cancel each other out</p> Signup and view all the answers

    What happens to the rays passing through the top third of the slit?

    <p>They create a bright line</p> Signup and view all the answers

    What does diffraction do to the light waves?

    <p>It makes them curve around the coin's edges</p> Signup and view all the answers

    What happens when diffracted waves run into each other?

    <p>They interfere with each other</p> Signup and view all the answers

    What happens at the places where the waves interfere destructively?

    <p>They create shadows</p> Signup and view all the answers

    What happens at the places where the waves interfere constructively?

    <p>They create a bright line</p> Signup and view all the answers

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