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3. Light travels from a crystal glass (1.54) into ethyl alcohol (1.36). The angle of incidence in the crystal glass is 40°. What is the angle of refraction in ethyl alcohol?

3. Light travels from a crystal glass (1.54) into ethyl alcohol (1.36). The angle of incidence in the crystal glass is 40°. What is the angle of refraction in ethyl alcohol?

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I need your help I need it today please answer 3&4 please I do have enough entry to send again some question so can you answer both thank you so much
3. Light travels from a crystal glass (1.54) into ethyl alcohol (1.36). The angle of incidence in the crystal glass is 40°. What is the angle of refraction in ethyl alcohol? 4. Determine the Brewster angle for external reflection at the surface of a glass plate with n=1,59 immersed in water with n=1.33.
Transcribed Image Text:3. Light travels from a crystal glass (1.54) into ethyl alcohol (1.36). The angle of incidence in the crystal glass is 40°. What is the angle of refraction in ethyl alcohol? 4. Determine the Brewster angle for external reflection at the surface of a glass plate with n=1,59 immersed in water with n=1.33.
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