A wedge-shaped film of air is made by placing a small slip of paper between the edges of two flat plates of glass. Light that has a wavelength of 539 nm is incident normally on the glass plates, and interference fringes are observed by reflection. If the angle made by the plates is 0.017°, how many dark interference fringes per centimeter are observed?
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A wedge-shaped film of air is made by placing a small slip of paper between the edges of two flat pl...
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