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A ray of light is incident on a glass prism (n = 1.2) with an angle of incidence 0,=40°. The ray
emerges from the opposite side of the prism with an angle 04. The apex angle of the prism is
60°. The deviation angle, 8, between the incident ray and the emerging ray is then:
0, = 40°
09
Nair =1
13.8
51.3
38.4"
O 44.5°

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