Shorter wavelength gives narrower fringes or diffraction bands

1. A.
   no change in diffraction pattern.
2. B.
   diffraction bands become narrow and crowded together.
3. C.
   diffraction bands become broader and farther apart.
4. D.
   bands disappear.

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1. A.
   The fringes become brighter.
2. B.
   The fringes become faint.
3. C.
   Fringe width decreases.
4. D.
   Fringe width increases.

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1. A.
   Reducing the separation between the slits.
2. B.
   Using blue light instead of green light.
3. C.
   Using red light instead of green light.
4. D.
   Moving the screen away from the slits.

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