In a diffraction grating, if the number of slits is increased, what happens to t

Practice Questions

Q1
In a diffraction grating, if the number of slits is increased, what happens to the sharpness of the maxima?
  1. Sharpness increases
  2. Sharpness decreases
  3. No effect
  4. Maxima disappear

Questions & Step-by-Step Solutions

In a diffraction grating, if the number of slits is increased, what happens to the sharpness of the maxima?
  • Step 1: Understand what a diffraction grating is. It is a tool with many slits that spreads light into different directions.
  • Step 2: Know that when light passes through these slits, it creates patterns of bright and dark spots called maxima and minima.
  • Step 3: Realize that maxima are the bright spots where light waves add together (constructive interference).
  • Step 4: Learn that increasing the number of slits means more light waves are interacting.
  • Step 5: Understand that more slits lead to more constructive interference, making the bright spots (maxima) sharper and more defined.
  • Step 6: Conclude that with more slits, the maxima become sharper because the light waves are more in sync.
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