Ar Laser Vidro Ar

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Fig. 1 shows a laser beam incident on a piece of wet filter paper placed on a glass plate whose 'refractive index
glass plate whose refractive index is to be measured (the rays are represented in the figure). Explain what happens and
deduce an expression for ni in terms of R and d. Consider the refractive index of air to be 1.
Note: Remember that all light that falls on a reflecting surface always has part of the light reflected, being refracted or not.
refracted or not. Moreover, θc in the figure represents the critical angle at which we have the condition of total internal reflection

 

Ar
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Vidro
Ar
Transcribed Image Text:Ar Laser Vidro Ar
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