34. Wave Optics

Single Slit Diffraction

Multiple Choice
A single slit is illuminated by coherent monochromatic light at $680 nm$ . On a screen $2..9 m$ behind the slit, a central bright spot is observed to have a width of $39 mm$ . What is the width of the single slit?
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Multiple Choice
Light from a 600 nm laser is shown through a single slit of unknown width. If a screen is placed 4.5 m behind the slit captures a diffraction patter with a central bright fringe of width 20 mm, what is the width of the single slit?
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Multiple Choice
In single-slit diffraction, which condition gives the angular position of the first minimum in the diffraction pattern on a distant screen?
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Multiple Choice
A carbon dioxide laser produces $10.6 μ m$ electromagnetic waves, which pass through a circular aperture with diameter $1 . 0 mm .$ What is the approximate width of the laser beam when it strikes a target $3 . 0 m$ away?
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Multiple Choice
In an experiment where red light passes through a single slit, which change would cause the central maximum on the diffraction pattern to become wider on the screen?
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Multiple Choice
A single slit is illuminated by coherent monochromatic light at $680 nm .$ On a screen $2 . 9 m$ behind the slit, a central bright spot is observed to have a width of $39 mm .$ What is the width of the single slit?
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Multiple Choice
A single slit experiment is conducted in air using a laser at $532 nm$ and a slit width of $20 μ m$ . What happens to the fringe spacing if the slit width is decreased while the distance to the screen and wavelength remain constant?
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Multiple Choice
A single slit experiment is conducted in air using a laser at $532 nm$ and a slit width of $20 μ m$ . What happens to the fringe spacing if the entire experiment is conducted in water?