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A thin beam of light enters a thick plastic sheet from air at an angle of 32.0° with the normal and continues in the sheet at an angle of 23.0° with the normal. What is the index of refraction of the plastic?

Respuesta :

Answer:

1.36

Explanation:

[tex]n_{air}[/tex] = Index of refraction of air = 1

[tex]n_{plastic}[/tex] = Index of refraction of plastic = ?

i = angle of incidence in air = 32.0° deg

r = angle of refraction in plastic = 23.0° deg

Using Snell's law

[tex]n_{air}[/tex] Sini = [tex]n_{plastic}[/tex] Sinr

(1) SIn32.0 = [tex]n_{plastic}[/tex] Sin23.0

[tex]n_{plastic}[/tex] = 1.36

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