What is the effect of increasing the wavelength of light in a double-slit diffra

Practice Questions

Q1
What is the effect of increasing the wavelength of light in a double-slit diffraction experiment?
  1. Fringe separation decreases
  2. Fringe separation increases
  3. No effect on fringe separation
  4. Fringe visibility decreases

Questions & Step-by-Step Solutions

What is the effect of increasing the wavelength of light in a double-slit diffraction experiment?
  • Step 1: Understand that in a double-slit diffraction experiment, light passes through two narrow slits.
  • Step 2: Know that when light passes through the slits, it creates a pattern of bright and dark spots called fringes on a screen.
  • Step 3: Recognize that the distance between these bright spots (fringe separation) is important.
  • Step 4: Learn that the wavelength of light is the distance between two peaks of the light wave.
  • Step 5: Realize that if you increase the wavelength of the light, the distance between the peaks becomes larger.
  • Step 6: Understand that a larger wavelength means the fringes on the screen will be further apart from each other.
  • Step 7: Conclude that increasing the wavelength increases the fringe separation in the diffraction pattern.
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