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AP Physics 2
13.3 Refraction
IntermediateMCQMathematicalConceptual24.4k
A semicircular glass block resting on its flat horizontal base. A vertical dashed line represents the normal to the flat base at its center point C. A single incoming light ray, drawn as a solid line with a single arrowhead pointing down and to the right, enters the curved top boundary of the semicircle. The ray travels along a radial line aimed directly at point C on the flat base. Inside the block, the angle between the incoming ray and the vertical dashed normal is labeled \(\theta = 30^\circ\). The index of refraction of the block is labeled \(n = \sqrt{2}\), and the surrounding medium is labeled air with \(n = 1.00\). No other labels, lines, text, or axes appear.
Light ray entering a semicircular glass block toward its center.
A monochromatic light ray enters a semicircular glass block with index of refraction \(n = \sqrt{2}\) surrounded by air (\(n = 1.00\)). The ray enters perpendicular to the curved surface and is directed toward the center of the flat boundary, making an angle of \(30^\circ\) with the normal to the flat boundary inside the block. Which of the following correctly pairs the behavior of the light ray at the flat boundary with the angle of the resulting ray relative to the normal?

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