Red light (n = 1.520) and violet light (n = 1.538) traveling in air are incident on a slab of crown glass. Both colors enter the glass at the same angle of refraction. The red light has an angle of incidence of 20.97°. What is the angle of incidence of the violet light? Give your answer to four significant figures.
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n₁ = 1.520
n₂= 1.538
n₁=sini₁/sinr₁
n₂=sini₂/sinr₂
sinr₁=sinr₂
sini₁/n₁=sini₂/n₂
sini₂=n₂•sini₁/n₁=1.538•sin 20.97/1.52 =0.3621
i₂=21.23°
n₂= 1.538
n₁=sini₁/sinr₁
n₂=sini₂/sinr₂
sinr₁=sinr₂
sini₁/n₁=sini₂/n₂
sini₂=n₂•sini₁/n₁=1.538•sin 20.97/1.52 =0.3621
i₂=21.23°
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