4 4- (a) In Fig. a beam of monochromatic light reflects and refracts at point A on the interface betweenmaterial 1 with index of refraction n1 = 1.33 and material 2 with index of refraction n2 = 1.77. Theincident beam makes an angle of 40° with the interface. What is the angle of reflection at point A? Whatis the angle of refraction there?00140°A(b) The light that enters material 2 at point A then reaches point B on the interface between material 2and material 3, which is air, as shown in Fig. The interface through B is parallel to that through A. At B,some of the light reflects and the rest enters the air. What is the angle of reflection? What is the angleof refraction into the air?IBAir

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4- (a) In Fig. a beam of monochromatic light reflects and refracts at point A on the interface between material 1 with index of refraction n1 = 1.33 and material 2 with index of refraction n2 = 1.77. The incident beam makes an angle of 40° with the interface. What is the angle of reflection at point A? What is the angle of refraction there? 001 40°%

4- (a) In Fig. a beam of monochromatic light reflects and refracts at point A on the interface between material 1 with index of refraction n1 = 1.33 and material 2 with index of refraction n2 = 1.77. The incident beam makes an angle of 40° with the interface. What is the angle of reflection at point A? What is the angle of refraction there? 001 40°%

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter22: Reflection And Refraction Of Light

Section: Chapter Questions

Problem 18P: A ray of light strikes a flat, 2.00-cm-thick block of glass (n = 1.50) at ail angle of 30.0 with...

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Light enters a prism of crown glass and refracts at an angle of 5.00 with respect to the normal at the interface. The crown glass has a mean index of refraction of 1.51. It is combined with one flint glass prism (n = 1.65) to produce no net deviation. a. Find the apex angle of the flint glass. b. Assume the index of refraction for violet light (v = 430 nm) is nv = 1.528 and the index of refraction for red light (r = 768 nm) is nr = 1.511 for crown glass. For flint glass using the same wavelengths, nv = 1.665 and nr = 1.645. Find the net dispersion.
The index of refraction for crown glass is 1.512 at a wavelength of 660 nm (red), whereas its index of refraction is 1.530 at a wavelength of 410 nm (violet). If both wavelengths are incident on a slab of crown glass at the same angle of incidence, 60.0, what is the angle of refraction for each wavelength?
A ray of 610 nm light goes from air into fused quartz at an incident angle of 55.0°. At what incident angle must 470 nm light enter flint glass to have the same angle of refraction?
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In Section 9.6, we described how the speed of light varies with wavelength (or frequency) for transparent solids. But the speed of light in matter is also a function of temperature and pressure. This dependence is most marked for gases and is instrumental in producing such things as mirages and atmospheric refraction, the latter phenomenon being the displacement of an astronomical object (like the Sun or another star) from its true position because of the passage of its light through the atmosphere. Because Earth’s atmosphere is a gaseous mixture and easily compressed, its density is highest near Earth’s surface and gradually declines with altitude. (Refer to the discussion in Section 4.4 and Figure 4.29.) Thus, the speed of light in the atmosphere is lowest near the surface and gradually gets higher, approaching c as one goes farther and farther into space. Using this fact and the law of refraction, sketch the path a light ray from the Sun would follow upon entering Earth’s atmosphere, and predict the apparent position of the Sun relative to its true position (Figure 9.85). What does this tell you about the actual location of the Sun’s disk relative to your local horizon when you see it apparently setting brilliantly in the west in the evening?
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Suppose you are using total internal reflection to make an efficient corner reflector. If there is air outside and the incident angle is 45.0°, what must be the minimum index of refraction of the material from which the reflector is made?
A scuba diver training in a pool looks at his instructor as shown in Figure 25.53. What angle does the ray from the instructor’s face make with the perpendicular to the water at the point where the ray enters? The angle between the ray in the water and the perpendicular to the water is 25.0°. Figure 25.53 A scuba diver in a pool and his trainer look at each other.
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