A Thin Film of Magnesium Fluoride (N = 1

Multiple Choice

A thin film of magnesium fluoride (n = 1.38) is applied to glass (n = 1.50) . If the thickness of the film is 100 nm, for what visible wavelength will it be nonreflecting?

A) 600 nm
B) 578 nm
C) 552 nm
D) 504 nm
E) 491 nm