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Two rectangular pieces of plane glass are laid one upon the other on a table. A...

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Physics

Two rectangular pieces of plane glass are laid one upon theother on a table. A thin strip of paper is placed between them atone edge, so that a very thin wedge of air is formed. The platesare illuminated at normal incidence by 542nm light from amercury-vapor lamp. Interference fringes are formed, with14.0fringes/centimeter .

Find the angle of the wedge.

Answer & Explanation Solved by verified expert
4.3 Ratings (667 Votes)
Close to the point of touching there are 4 reflected rays one from each surface since the glass is nearly transparent each reflected ray is veryweak BUT about the same intensity They occur in pairs two from the upper surfaces    See Answer
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