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.

Page Directions The numerical values in this worksheet are randomly generated allowing students the opportunity to conveniently practice, and drill, common situations.

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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 477 nm passes through a single slit of width 5.4 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 meters away?

5.07 degrees

7.61 degrees

2.53 degrees

1.27 degrees

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Question 5 What is the width of the central maximum on the screen?

0.53 meters

0.27 meters

0.80 meters

0.13 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 wider

it would remain unchanged

it would get narrower

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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 remain unchanged

it would get narrower

it would get wider