Practice Problems
Single Slit Diffraction
Topics:
On this worksheet you will investigate the properties of
single slit diffraction
along with any similarities and differences that it has with double slit interference patterns.
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Directions:
Directions:
On this worksheet you
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Question 1
Which of the following two intensity diagrams best represents the passage of waves through a single slit?
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Question 2
In single slit diffraction patterns, the bright fringes
get narrower and dimmer as you move away from the central maximum
stay the same width and brightness as you move away from the central maximum
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Question 3
When working single slit diffraction problems, if Point P is located in a minimum, or dark fringe, the extra distance a ray from the bottom of the slit travels compared to the distance a ray from the top of the slip travels is
a whole number of wavelengths: 1λ, 2λ, 3λ
an odd number of half-wavelengths: ½λ, 3(½λ), 5(½λ)
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Question 4
Light of wavelength 596 nm passes through a single slit of width 4.9 µm. At what angular deviation, as measured from the middle of the central maximum, would the 1st order dark fringes appear on a screen that is 3.4 meters away?
10.51 degrees
3.49 degrees
6.99 degrees
1.74 degrees
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Question 5
What is the width of the central maximum on the screen?
0.21 meters
0.83 meters
1.25 meters
0.41 meters
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Question 6
If the wavelength of light passing through the slit were to be decreased, what changes would be noticed in the width of the central maximum?
it would get narrower
it would remain unchanged
it would get wider
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Question 7
If the wavelength of light passing through the slit remained the same, but the width of the slit was decreased, what changes would be noticed in the width of the central maximum?
it would get narrower
it would remain unchanged
it would get wider
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