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AP Physics 2
13.3 Refraction
IntermediateMCQMathematicalProportional Analysis23.7k
A horizontal schematic showing two parallel light paths, one above the other. The top path starts at a small vertical rectangle on the left labeled Source 1 and extends horizontally to the right across open space labeled air to a small vertical rectangle on the right labeled Detector 1. The bottom path starts at a matching small vertical rectangle on the left labeled Source 2, passes horizontally through a light gray shaded rectangle labeled Glass, n = 1.50, and reaches a matching small vertical rectangle on the right labeled Detector 2. A horizontal dimension line with arrows at both ends spans the distance between the sources and detectors and is labeled L. A small horizontal right-pointing arrow labeled Pulse 1 sits in the top path, and a matching right-pointing arrow labeled Pulse 2 sits in the bottom path. No other labels, lines, text, or axes appear.
Two light pulses traversing identical path lengths \(L\) through air and glass.
Two identical laser pulses are emitted simultaneously toward parallel detectors separated from the sources by the same distance \(L\). Pulse 1 travels entirely through air, where the index of refraction is \(n_1 = 1.00\). Pulse 2 travels through a block of transparent glass of length \(L\) having an index of refraction \(n_2 = 1.50\). What is the ratio of the transit time of Pulse 1 to the transit time of Pulse 2, \(\dfrac{t_1}{t_2}\)?

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