A plastic film with index of refraction 1.85 is put on the surface of a car window to increase the
(a) What minimum thickness is required if light with wavelength 550nm in air reflected from the two sides of the film is to interfere constructively?
(b) It is found to be difficult to manufacture and install coatings as thin as calculated in part (a). What is the next greatest thickness for which there will also be constructive interference?
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Question Posted: October 20, 2010 03:27:34