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Chapter 37 Wave Optics EXAMPLES

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Chapter 37: Interference of Light Waves: Examples

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Example 37.1 Wavelength of a Light Source A viewing screen is separated from a double-slit source by 1.2 between slits is mm. The second order bright fringe (m = 2) is 4.5 cm from the center line. Determine the wavelength of the light. Calculate the distance between adjacent bright fringes

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Example 37.2 Fringes of Two Wavelengths A light source emits visible light of two wavelengths: = 430 nm and ’ = 510 nm. The source is used in a double-slit interference experiment in which L = 1.50 m and d = mm. Find the separation between the third-order bright fringes.

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Example 37.3 Six slits (Quiz 37.2) Sketch the interference patter from six slits The number of secondary maxima is always N – 2 where N is the number of slits Because N = 6, the secondary maxima are 1/36 as intense as the primary maxima.

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Material from the book to Study!!! Objective Questions: 3-6 Conceptual Questions: 1-3 Problems: Material for the 2 nd Midterm

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