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A beam of light is incident on the flat surface of a block of Fabulite
TABLE 37-1
Approximate Indices of Refraction of Various Substances*
*Values vary with physical conditions–purify, pressure, etc. These correspond to a wavelength of 589 nm.
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Schaum's Outline of College Physics, Twelfth Edition (Schaum's Outlines)
- A beam of light traveling in air strikes a glass slab at an angle of incidence less than 90°. After entering the glass slab, what does the beam of light do? (There could be more than one correct choice.) O It bends away from the normal at the point of contact. O It slows down. It follows the normal to the glass slab. O It bends closer to the normal at the point of contact.arrow_forwardProblem 1: In the ray diagram shown below (angles not to scale), the ray is incident a the critical angle on the interface between materials 2 and 3. Angle = 60.0°, and two of the indexes of refraction are n₁ = 1.70 and n2 = 1.60. (a). What is the index of refraction n3? (b). What is the angle 0? (c). If decreased, does light refract into material 3? N2 nz n1 Өarrow_forwardA ray of light strikes the midpoint of one face of an equiangular (60°-60°-60°) glass prism (n = 1.5) at an angle of incidence of 34º. (a) Trace the path of the light ray through the glass and find the angles of incidence and refraction at each surface. First surface: incidence refraction 0 Second surface: 0. incidence refraction = Need Help? = = = O Read It O (b) If a small fraction of light is also reflected at each surface, what are the angles of reflection at the surfaces? Ө ° (first surface) e reflection. reflection= ° (second surface) O O Master Itarrow_forward
- In Figure (a), a beam of light in material 1 is incident on a boundary at an angle of 28° The extent to which the light is bent due to refraction depends, in part, on the index of refraction n2 of material 2. Figure (b) gives the angle of refraction 02 versus n2 for a range of possible n2 values, from n, = 1.36 to n, = 1.94. What is the speed of light in material 1? 38° 28 28 18 na (a) (b) Number i ! Units m/sarrow_forwardA thick piece of Lucite (n = 1.50) has the shape of a quarter circle of radius R = 12.8 cm as shown in the side view of the figure below. A light ray traveling in air parallel to the base of the Lucite is incident at a distance h = 6.60 cm above the base and emerges out of the Lucite at an angle e with the horizontal. Determine the value of 8. Incoming ray Outgoing ray Rarrow_forwardA ray of light is incident on an air/water interface. The ray makes an angle of θ1 = 38 degrees with respect to the normal of the surface. The index of the air is n1 = 1 while water is n2 = 1.33. Numerically, what is the reflection angle ψ in degrees?arrow_forward
- = O For refraction across an air-glass interface where ng 1.63, make a plot of the refracted angle as a function of the incident angle, with 0; = 0 to 90°.arrow_forwardAs the ray travels from air (n = 1.00) to water (n = transition ... 1.33), the critical angel for this does not exist. is equal to 41.20 O is equal to 138.80 is equal to 48.80arrow_forwardIn the figure, light from ray A refracts from material 1 (n1 = 1.60) into a thin layer of material 2 (n2 = 1.80), crosses that layer, and is then incident at the critical angle on the interface between materials 2 and 3 (n3 = 1.3). (a) What is the value of incident angle θA? (b) If θA is decreased, does part of the light refract into material 3? Light from ray B refracts from material 1 into the thin layer, crosses that layer, and is then incident at the critical angle on the interface between materials 2 and 3. (c) What is the value of incident angle θB? (d) If θB is decreased, does part of the light refract into material 3?arrow_forward
- A light ray incident on a water-air interface is at an angle 17o from the normal (nw = 1.33). What angle does the refracted ray make with the normal?arrow_forwardWhen a light ray crosses from water into glass, it emerges at an angle of 30° with respect to the normal of the interface. What is its angle of incidence? I used Snell's Law to find the angle of incidence as 34.8 degrees (rounded to 3 sig fig), using index of refraction for water as 1.333 and for glass as 1.52. However, the answer was marked as wrong. Could you please explain steps for solving to get theta as approximately 42 degrees?arrow_forwardA ray of light is pointed at the surface of a block of fused quartz at an angle of 30.0° with respect to the normal (a line perpendicular to the surface at the spot where the ray hits the block). Part of the light is reflected and the rest refracted. What is the angle (in degrees) between the reflected and refracted rays? Oarrow_forward
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