(b) Explain how a thin film of refractive index n can be used as an anti-reflective...
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(b) Explain how a thin film of refractive index n can be used as an anti-reflective coating on a glass lens with refractive index ng. Give the equations that describe the destructive interference condition for the two main reflected light components. (7 marks) (c) A thin oil slick (n = 1.28) is observed on the surface of water (n = 1.33). When a beam of white light strikes this oil film, only green light is seen in reflection of wavelength 550 nm. From this information, calculate a thickness of the oil film on the water. (5 marks) (b) Explain how a thin film of refractive index n can be used as an anti-reflective coating on a glass lens with refractive index ng. Give the equations that describe the destructive interference condition for the two main reflected light components. (7 marks) (c) A thin oil slick (n = 1.28) is observed on the surface of water (n = 1.33). When a beam of white light strikes this oil film, only green light is seen in reflection of wavelength 550 nm. From this information, calculate a thickness of the oil film on the water. (5 marks)
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Related Book For
Fundamentals of Physics
ISBN: 978-0471758013
8th Extended edition
Authors: Jearl Walker, Halliday Resnick
Posted Date:
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