According to Table 35.1, the index of refraction of flint glass is 1.66 and the index of refraction of crown glass is 1.52. (i) A film formed by one drop of sassafras oil, on a horizontal surface of a flint glass block, is viewed by reflected light. The film appears brightest at its outer margin, where it is thinnest. A film of the same oil on crown glass appears dark at its outer margin. What can you say about the index of refraction of the oil? (a) It must be less than 1.52. (b) It must be between 1.52 and 1.66. (c) It must be greater than 1.66. (d) None of those statements is necessarily true, (ii) Could a very thin film of some other liquid appear bright by reflected light on both of the glass blocks? (iii) Could it appear dark on both? (iv) Could it appear dark on crown glass and bright on flint glass? Experiments described by-Thomas Young suggested this question.
According to Table 35.1, the index of refraction of flint glass is 1.66 and the index of refraction of crown glass is 1.52. (i) A film formed by one drop of sassafras oil, on a horizontal surface of a flint glass block, is viewed by reflected light. The film appears brightest at its outer margin, where it is thinnest. A film of the same oil on crown glass appears dark at its outer margin. What can you say about the index of refraction of the oil? (a) It must be less than 1.52. (b) It must be between 1.52 and 1.66. (c) It must be greater than 1.66. (d) None of those statements is necessarily true, (ii) Could a very thin film of some other liquid appear bright by reflected light on both of the glass blocks? (iii) Could it appear dark on both? (iv) Could it appear dark on crown glass and bright on flint glass? Experiments described by-Thomas Young suggested this question.
According to Table 35.1, the index of refraction of flint glass is 1.66 and the index of refraction of crown glass is 1.52. (i) A film formed by one drop of sassafras oil, on a horizontal surface of a flint glass block, is viewed by reflected light. The film appears brightest at its outer margin, where it is thinnest. A film of the same oil on crown glass appears dark at its outer margin. What can you say about the index of refraction of the oil? (a) It must be less than 1.52. (b) It must be between 1.52 and 1.66. (c) It must be greater than 1.66. (d) None of those statements is necessarily true, (ii) Could a very thin film of some other liquid appear bright by reflected light on both of the glass blocks? (iii) Could it appear dark on both? (iv) Could it appear dark on crown glass and bright on flint glass? Experiments described by-Thomas Young suggested this question.
Diamond sparkles a lot because it has a very high refractive index 2.42. The light entering the structure of the diamond is totally internally reflected many times, so that many light rays are leaving the diamond in all directions. What is the critical angle between air and diamond, in degrees?
What is the critical angle for the interface between water and diamond? The index of refraction of diamond is 2.42. To be internally reflected, the light must start in which material?
A thin layer of liquid methylene iodide (n = 1.89) issandwiched between two flat, parallel plates of glass (n =1.42). What must be the thickness of the liquid layer if normallyincident light with λ =620 nm in air is to be strongly reflected?
82.0 nm
126.0nm
104.2 nm
78.6 nm
none
Chapter 37 Solutions
Physics for Scientists and Engineers, Technology Update (No access codes included)
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