Knight_ch22

# Knight_ch22 - Chapter 22 Suppose the viewing screen in the...

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Chapter 22

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1. They get brighter but otherwise do not change. 2. They get brighter and closer together. 3. They get brighter and farther apart. 4. They get out of focus. 5. They fade out and disappear. Suppose the viewing screen in the figure is moved closer to the double slit. What happens to the interference fringes?
1. They get brighter but otherwise do not change. 2. They get brighter and closer together. 3. They get brighter and farther apart. 4. They get out of focus. 5. They fade out and disappear. Suppose the viewing screen in the figure is moved closer to the double slit. What happens to the interference fringes?

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Light of wavelength 1 illuminates a double slit, and interference fringes are observed on a screen behind the slits. When the wavelength is changed to 2 , the fringes get closer together. How large is 2 relative to 1 ? 1. 2 is larger than 1 . 2. 2 is smaller than 1 . 3. Cannot be determined from this information.
1 illuminates a double slit, and interference fringes are observed on a screen behind the slits. When the wavelength is changed to 2 , the fringes get closer together. How large is 2 relative to 1 ? 1. 2 2 is smaller than 1 . 3. Cannot be determined from this information.

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## This note was uploaded on 04/08/2008 for the course PHYS 270 taught by Professor Drake during the Spring '08 term at Maryland.

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Knight_ch22 - Chapter 22 Suppose the viewing screen in the...

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