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

Practice Questions

Q1
What is the effect of increasing the wavelength of light used in a double-slit experiment on the fringe separation?
  1. Fringe separation decreases
  2. Fringe separation increases
  3. Fringe separation remains the same
  4. Fringe separation becomes zero

Questions & Step-by-Step Solutions

What is the effect of increasing the wavelength of light used in a double-slit experiment on the fringe separation?
  • Step 1: Understand what a double-slit experiment is. It involves shining light through two narrow slits to create an interference pattern on a screen.
  • Step 2: Know that the interference pattern consists of bright and dark fringes (lines) on the screen.
  • Step 3: Learn that the distance between these fringes is called fringe separation (β).
  • Step 4: Recognize that fringe separation (β) depends on the wavelength of the light (λ) used in the experiment.
  • Step 5: Remember the relationship: as the wavelength (λ) increases, the fringe separation (β) also increases.
  • Step 6: Conclude that if you increase the wavelength of the light, the fringes on the screen will be further apart.
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