Question
Asked Dec 27, 2019
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Monochromatic light is beamed into a Michelson interferometer. The movable mirror is displaced 0.382 mm, causing the central spot in the interferometer pattern to change from bright to dark and back to bright N 5 1 700 times. (a) Determine the wavelength of the light. What color is it? (b) If monochromatic red light is used instead and the mirror is moved the same distance, would N be larger or smaller? Explain.

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Expert Answer

Step 1

(a)

 There are two fringe shift occurring as the central spot in the interferometer pattern goes through a full cycle from bright to dark and from dark to bright.

Step 2

The distance moved by the movable mirror is

Physics homework question answer, step 2, image 1
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Step 3

The wavelength of the light illuminati...

Physics homework question answer, step 3, image 1
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Ray Optics

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