PhysicsLAB Practice Problems
Single Slit Diffraction

Directions: On this worksheet you will investigate the properties of single slit diffraction along with any similarities and differences it has with double slit interference patterns.

Question 1  Which of the following two intensity diagrams best represents the passage of waves through a single slit?
Question 2  In single slit diffraction patterns, the bright fringes
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
Question 4  Light of wavelength 586 nm passes through a single slit of width 4.5 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?
Question 5  What is the width of the central maximum on the screen?
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?
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?


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