A prism of refractive index n, and another prism of refractive index n₂ are stuck together with a gap as shown in the figure. The angles of the prism are as shown. n₁ and n₂ depend on λ, the wavelength of light according to : n₁ = 1.20+. 10.8 × 104 2² n₂ = 1.45 + and 60° 1.80 × 104 2² 70° n₁ 12 20° 40° B where λ is in nm. 0 (a) Calculate the wavelength o for which rays incident at any angle on the interface BC pass through without bending at that interface.
A prism of refractive index n, and another prism of refractive index n₂ are stuck together with a gap as shown in the figure. The angles of the prism are as shown. n₁ and n₂ depend on λ, the wavelength of light according to : n₁ = 1.20+. 10.8 × 104 2² n₂ = 1.45 + and 60° 1.80 × 104 2² 70° n₁ 12 20° 40° B where λ is in nm. 0 (a) Calculate the wavelength o for which rays incident at any angle on the interface BC pass through without bending at that interface.
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Transcribed Image Text:A prism of refractive
index n, and another prism
of refractive index n₂ are
stuck together with a gap
as shown in the figure. The
angles of the prism are as
shown. n₁ and n₂ depend
on λ, the wavelength of
light according to :
n₁ = 1.20 +
10.8 × 104
1²
n₂ = 1.45 +
A
60°
and
volds
1.80 × 104
2²
с
70°
n₁
D
12
20⁰
40°
B
where λ is in nm.
(a) Calculate the wavelength o for which rays incident at
0
any angle on the interface BC pass through without
bending at that interface.
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