COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Question
Chapter 23, Problem 1QAP
To determine
To Explain:
Huygens' principle, and why is it necessary to understand Snell's law of refraction.
Expert Solution & Answer
Explanation of Solution
Introduction:
It is given to have an idea about Huygens' principle and Snell's law of refraction.
Christiaan Huygens proposed that every point along the front of a wave be treated as many separate sources of tiny "wavelets" that move at the speed of the wave. This is essential to see how light moves from one medium to a different medium and allows you to predict the bending that occurs in Snell's law. This is why Huygens' principle is necessary to understand Snell's law of refraction.Conclusion:
Huygens' principle and why is it necessary to understand Snell's law of refraction is explained
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Students have asked these similar questions
Do you think Huygens’ principle is important? Why?
What type of experimental evidence indicates that light is a wave?
Give an example of a wave characteristic of light that is easily observed outside the laboratory.
(a) State Huygen’s principle. Using this principle draw a diagram to show how a plane wave front incident at the interface of the two media gets refracted when it propagates from a rarer to a denser medium. Hence verify Snell’s law of refraction.
(b) When monochromatic light travels from a rarer to a denser medium, explain the following, giving reasons :
(i) Is the frequency of reflected and refracted light same as the frequency of incident light?
(ii) Does the decrease in speed imply a reduction in the energy carried by light wave?
The experimental discovery of this relationship is usually credited
to Willebrord Snell(1591–1627) and is therefore known as Snell's law of
refraction.
Example: A beam of light of wavelength 550 nm traveling in air is
incident on a slab of transparent material. The incident beam makes an
angle of 40.0° with the normal, and the refracted beam makes an angle of
26.0° with the normal. Find the index of refraction of the material.
Chapter 23 Solutions
COLLEGE PHYSICS
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- How can you use total internal reflection to estimate the index of refraction of a medium?arrow_forwardA light beam containing red and violet wavelengths is incident on a slab of quartz at an angle of incidence of 50.00. The index of refraction of quartz is 1.455 at 660 nm (red light), and its index of refraction is 1.468 at 410 nm (violet light). Find the dispersion of the slab, which is defined as the difference in the angles of refraction for the two wavelengths.arrow_forwardConsider a common mirage formed by superheated air immediately above a roadway. A truck driver whose eyes are 2.00 m above the road, where n = 1.000 293, looks forward. She perceives the illusion of a patch of water ahead on the road. The road appears wet only beyond a point on the road at which her line of sight makes an angle of 1.20 below the horizontal. Find the index of refraction of the air immediately above the road surface.arrow_forward
- What 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_forwardThe 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?arrow_forwardA 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.arrow_forward
- 24. A light beam containing red and violet wavelengths is inci- dent on a slab of quartz at an angle of incidence of 50.0°. The index of refraction of quartz is 1.455 at 600 nm (red light), and its index of refraction is 1.468 at 410 nm (vio- let light). Find the dispersion of the slab, which is defined as the difference in the angles of refraction for the two wavelengths. Find 8 and 0 3. 4.arrow_forwardUse Huygens’ principle to show how a plane wavefront propagates from a denser to rarer medium. Hence verify Snell’s law of refraction.arrow_forwardhow to slove?arrow_forward
- When a fish looks up at an angle of 45 degrees with the horizon, does it see the sky or the reflection of the bottom beneath? Explain why.arrow_forward(a) Define wavefront. Use Huygens’ principle to verify the laws of refraction. (b) How is linearly polarised light obtained by the process of scattering of light? Find the Brewster angle for air—glass interface, when the refractive index of glass = 1.5.arrow_forwardCan the absolute refractive index of a medium with respect to another medium be less than unity? Give reason.arrow_forward
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