The light beam propagates from the first medium with the refractive index n₁ into the second medium with the refractive index n₂.
The angles of incidence and refraction are θ₁ and θ₂ respectively.
The following data are known:
θ₁ = °.
n₂ =
θ₂ = °.
Find unknown n₁.
Enter your answer using 3 significant figures.
n₁ =
n1 sin θ1 = n2 sin θ2
n1 = n2 sin θ2 / sin θ1
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