Binoculars and Microscopes Are Frequently Made with Coated Optics by Adding

question 42

Multiple Choice

Binoculars and microscopes are frequently made with coated optics by adding a thin layer of transparent material to the lens surface as shown, in order to improve light transmission.One wants:

• A)constructive interference between waves 1 and 2
• B)destructive interference between waves 3 and 4
• C)constructive interference between waves 3 and 4
• D)the coating to be more transparent than the lens
• E)the speed of light in the coating to be less than that in the lens

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