21st Century Astronomy
6th Edition
ISBN: 9780393428063
Author: Kay
Publisher: NORTON
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Chapter 6, Problem 32QP
To determine
Identify the relation between the angle made green light as it enters the block and leaves the block in figure 6.2b.
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Light coming from a fish makes an incidence angle of 30° to normal under the water. The index of refraction
of water is 1.33. A fisherman is looking at the fish through air. At what angle with the normal (6, ) will the fish
appear to the fisherman? Use Snell's law: n, sin e, = n, sine,
Fig. 1 shows a laser beam incident on a piece of wet filter paper placed on a glass plate whose 'refractive indexglass plate whose refractive index is to be measured (the rays are represented in the figure). Explain what happens anddeduce an expression for ni in terms of R and d. Consider the refractive index of air to be 1.Note: Remember that all light that falls on a reflecting surface always has part of the light reflected, being refracted or not.refracted or not. Moreover, θc in the figure represents the critical angle at which we have the condition of total internal reflection
You may use a calculator and your notes.
Below, you glimpse a path that light takes through a clear block that has an index of refraction of 1.20.
Using a ruler and protractor, draw the path that light will take as it goes 1) into the block, 2) out of the
block, as well as 3) the path some of the light takes when it reflects off of the bottom interface (recall
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block
air
Chapter 6 Solutions
21st Century Astronomy
Ch. 6.1 - Prob. 6.1ACYUCh. 6.1 - Prob. 6.1BCYUCh. 6.2 - Prob. 6.2CYUCh. 6.3 - Prob. 6.3CYUCh. 6.4 - Prob. 6.4CYUCh. 6.5 - Prob. 6.5CYUCh. 6 - Prob. 1QPCh. 6 - Prob. 2QPCh. 6 - Prob. 3QPCh. 6 - Prob. 4QP
Ch. 6 - Prob. 5QPCh. 6 - Prob. 6QPCh. 6 - Prob. 7QPCh. 6 - Prob. 8QPCh. 6 - Prob. 9QPCh. 6 - Prob. 10QPCh. 6 - Prob. 11QPCh. 6 - Prob. 12QPCh. 6 - Prob. 13QPCh. 6 - Prob. 14QPCh. 6 - Prob. 15QPCh. 6 - Prob. 16QPCh. 6 - Prob. 17QPCh. 6 - Prob. 18QPCh. 6 - Prob. 19QPCh. 6 - Prob. 20QPCh. 6 - Prob. 21QPCh. 6 - Prob. 22QPCh. 6 - Prob. 23QPCh. 6 - Prob. 24QPCh. 6 - Prob. 25QPCh. 6 - Prob. 26QPCh. 6 - Prob. 27QPCh. 6 - Prob. 28QPCh. 6 - Prob. 29QPCh. 6 - Prob. 30QPCh. 6 - Prob. 31QPCh. 6 - Prob. 32QPCh. 6 - Prob. 33QPCh. 6 - Prob. 34QPCh. 6 - Prob. 35QPCh. 6 - Prob. 36QPCh. 6 - Prob. 37QPCh. 6 - Prob. 38QPCh. 6 - Prob. 39QPCh. 6 - Prob. 40QPCh. 6 - Prob. 41QPCh. 6 - Prob. 42QPCh. 6 - Prob. 43QPCh. 6 - Prob. 44QPCh. 6 - Prob. 45QP
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- Light passes from a material with index of refraction 1.3 into one with index of refraction 1.2. Compared with the incident ray, what happens to the refracted ray? (a) It bends toward the normal. (b) It is undeflected. (c) It bends away from the normal.arrow_forwardUnpolarized light in vacuum is incident onto a sheet of glass with index of refraction n. The reflected and refracted rays are perpendicular to each other. Find the angle of incidence. This angle is called Brewsters angle or the polarizing angle. In this situation, the reflected light is linearly polarized, with its electric field restricted to be perpendicular to the plane containing the rays and the normal.arrow_forwardWhat happens to a light wave when it travels from air into glass? (a) Its speed remains the same. (b) Its speed increases. (c) Its wavelength increases. (d) Its wavelength remains the same. (e) Its frequency remains the same.arrow_forward
- A laser beam is pointed at the surface of a block of fluorite 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 beams? Need Help? Read Itarrow_forwardChoose the correct statement. For light, we can call white a tertiary color because RED + BLUE + GREEN = WHITE. O For light, we can call white a tertiary color because GREEN + MAGENTA = WHITE. O We cannot call white a tertiary color. For light, we can call white a tertiary color because YELLOW + MAGENTA + CYAN = WHITE.arrow_forwardWhich one of the below statements is wrong? Select one: Color dispersion in a dielectric material is an indication of the frequency dependence of its refractive index. A spherical ball of glass (ng = 1.5), with a radius of 20 cm, is immersed in water (nw = 1.3). The surface of the ball has a refractive power of 0.01 D. Fermat’s principle states that the trajectory of a light ray between two points extremizes the total optical path.arrow_forward
- On a sunny summer day, with the sun overhead, you can stand under a tree and look on the ground at the pattern of light that has passed throughgaps between the leaves. You may see illuminated circles of varying brightness. Why are there circles, when the gaps between the leaves have irregular shapes?arrow_forwardMy teacher ask us to do this experiment At the middle of a paper protractor, set a crown glass plate. Shine a laser pointer on the side of the glass plate. After that, identify the normal to the incident ray. Then, measure the angle of refraction of each of the following angles of incidence: 10°, 15°, 20°, 25°, 30°, 35°. On a graph, plot the sine of the angle of incidence (x-axis) versus the sine of the angle of refraction (y-axis). Using this graph, identify the refractive index of glass and compute the percentage error of the index of refraction. but I cannot understand it. would u kindly help me understand the step by step process? I'm a visual learner so sketch itarrow_forwardWhat does the term Normal mean in the context of dealing with an optical surface Describe how light behaves in relation to the Normal when travelling between two interfaces in the following cases: From a less dense to a denser mediumarrow_forward
- In the figure, light from ray A refracts from material 1 (n₁ = 1.73) 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 = 1.40). (a) What is the value of incident angle BA? (b) If 8A 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 Og? (d) If Og is decreased, does part of the light refract into material 3? OB I ng no 121arrow_forwardA beam of white light is incident on the surface of a diamond at an angle a. (Figure 1) Since the index of refraction depends on the light's wavelength, the different colors that comprise white light will spread out as they pass through the diamond. The indices of refraction in diamond are nred = 2.410 for red light and blue = 2.450 for blue light. The surrounding air has nair = 1.000. Note that the angles in the figure are not to scale.arrow_forwardTotal internal reflection: The speed of light in a material is 0.41c. What is the critical angle of a light ray in degrees at the interface between the material and a vacuum? (keep 2 sig figs please)arrow_forward
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