A physicist directs a laser beam through a transparent medium, toward one surface of an equilateral prism. (The beam travels, and remains in, the plane of the page.) Incident on Surface 1 at an angle 9₁, the beam then encounters Surface 2 from within the prism. If the angle of incidence at Surface 2 equals, the critical angle for this prism, what is the original incidence angle, ₁ (in degrees)? The critical angle in this case is = 44.0⁰. 44.0° 44.0⁰ Surface 1 60.0° Surface 2 24.08 X What does the critical angle tell you about the ratio of the indices of refraction in the prism and the surrounding medium? Use geometry to determine the angle of refraction that the light undergoes upon entering the prism from above. Then apply Snell's law to compute 0₁. Double check that your calculator is in degree mode.

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A physicist directs a laser beam through a transparent medium, toward one surface of an equilateral prism. (The beam travels,
and remains in, the plane of the page.) Incident on Surface 1 at an angle ₁, the beam then encounters Surface 2 from within the
prism.
If the angle of incidence at Surface 2 equals, the critical angle for this prism, what is the original incidence angle,
8₁ (in degrees)? The critical angle in this case is = 44.0⁰.
44.0°
44.0°
Surface 1
60.0°
Surface 2
24.08
x
What does the critical angle tell you about the ratio of the indices of refraction in the prism and the surrounding medium? Use
geometry to determine the angle of refraction that the light undergoes upon entering the prism from above. Then apply Snell's
law to compute ₁. Double check that your calculator is in degree mode.
Transcribed Image Text:A physicist directs a laser beam through a transparent medium, toward one surface of an equilateral prism. (The beam travels, and remains in, the plane of the page.) Incident on Surface 1 at an angle ₁, the beam then encounters Surface 2 from within the prism. If the angle of incidence at Surface 2 equals, the critical angle for this prism, what is the original incidence angle, 8₁ (in degrees)? The critical angle in this case is = 44.0⁰. 44.0° 44.0° Surface 1 60.0° Surface 2 24.08 x What does the critical angle tell you about the ratio of the indices of refraction in the prism and the surrounding medium? Use geometry to determine the angle of refraction that the light undergoes upon entering the prism from above. Then apply Snell's law to compute ₁. Double check that your calculator is in degree mode.
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