. a. A ray of light enters a fiber optic cable with index of refraction n from air at an angleas shown below. Let the angle 0 be 69°. For total internal reflection to occur at the cable-air interface, what must be the value of n?n=1.3nair = 1BdOR8nThink & PrepareYou have three unkowns in this problem, the angle of refraction R, the angle ofrefractionand n.1. Set-up Snell's Law equation relating 6, R, and n.2. Set-up the critical angle relationship between cand n3.0+0=?sine4. You may need some trigonometric identities such as sin (90° - 0) = ? and= 2.coseb. In the problem above, the angle e increases. How does this affect what n must be toensure total internal reflection?A) n will decrease because the critical angle will become largerB) n will decrease becuase the equation for the critical angle is proportional to 1/n of thematerialC) n will increase because the critical angle will become smallerD) n will increase becuase the equation for the critical angle is proportional to 1/n of thematerial○ AABO CDACBDNo, that's only partially correct

Step 1: Using Snell's law n1sinθ=n2sinθr1×sin690=nsinθr Step 2: From the concept of critical…

Answered: . a. A ray of light enters a fiber…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Assume that a material is composed of 3 layers in descending order: air (nair = 1.00), water (nwater = 1.33), and glass (nglass= 1.52). Then, assume that a monochromatic light ray in the air passes through the surface of water with an angle of incidence 0₁ = 40 degrees. A. Find the angle of refraction in glass after it passes completely through the water layer. B. Find how fast is the light ray moving in the glass?
Answer the following questions A. The critical angle for total internal reflection at a diamond-air interface is 25 degrees. Suppose the light falls at an angle to the normal. Then, total internal reflection will occur if the incident medium is: a) air and angle < 25 degrees b) air and angle > 25 degrees c) air and angle = 25 degrees d) diameter and angle > 25 degrees e) diamond and angle < 25 degrees B. A ray of light in water (index n1) hits its surface (with air) at a critical angle for total internal reflection. Now some oil (index n2) floats in the water. The angle between the ray in the oil and the normal is: note: sin -1 (1.00), it is read as the inverse sine of one. a) sin -1 (1/n1) b) sin -1 (1/n2) c) sin -1 (1.00) d) sin -1 (n1/n2) e) sin -1 (n2/n1) C. A ray of light passes obliquely (non-zero angle) through a glass plate that has parallel faces. The emerging ray: a) it leans more towards the normal than the incident ray b) is reflected internally toatl c) tilts…
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A light ray enters a rectangular block of plastic at an angle 0, = 47.8° and emerges at an angle 0, = 73.2°, as shown in the figure below. (a) Determine the index of refraction of the plastic. (b) If the light ray enters the plastic at a point L = 50.0 cm from the bottom edge, how long does it take the light ray to travel through the plastic? ns
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a. A ray of light enters a fiber optic cable with index of refraction n from air at an angle e as shown below. Let the angle 0 be 69°. For total internal reflection to occur at the cable-air interface, what must be the value of n? n = nair = 1 0 θα θα n
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a. A ray of light enters a fiber optic cable with index of refraction n from air at an angle e as shown below. Let the angle 0 be 69°. For total internal reflection to occur at the cable-air interface, what must be the value of n? Dair - 1 n = Ꮎ θα ec n

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