6. A light ray of wavelength 589 nm is incident at an angle ? on the top surface
ID: 2238579 • Letter: 6
Question
6. A light ray of wavelength 589 nm is incident at an angle ? on the top surface of a block of polystyrene surrounded by air, as shown in Figure P22.46.
(a) Find the maximum value of ? for which the refracted ray will undergo total internal reflection at the left vertical face of the block.
Answer Choices: 42.6deg; 63.5deg; 47.84deg; There is no entering angle that will lead to an angle large enough to internally reflect from the left side in air
(b) Repeat the calculation for the case in which the polystyrene block is immersed in water.
Answer choices: 90deg; 41.67deg; 63.5deg; 48.33deg;There is no entering angle that will lead to an angle large enough to internally reflect from the left side in water.
(c) What happens if the block is immersed in carbondisulfide?
Answer Choices: 90deg; 41.67deg; 63.5deg; 48.33deg; There is no entering angle that will lead to an angle large enough to internally reflect from the left side in carbondisulfide.
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