An Airplane Is Made Invisible to Radar by Coating It

question 35

Multiple Choice

An airplane is made invisible to radar by coating it with a 7.0 mm thick layer of an antireflective polymer.If the maximum wavelength of radar waves for which the plane is made invisible is 4.0 cm,what is the index of refraction of the polymer?

• A)1.43
• B)1.62
• C)1.38
• D)1.50
• E)1.55

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