A Lens That Has an Index of Refraction of 1

Multiple Choice

A lens that has an index of refraction of 1.61 is coated with a non-reflective coating that has an index of refraction of 1.45. Determine the minimum thickness for the film if it is to be non-reflecting for light of wavelength 5.60 × 10² nm.

A) 1.93 × 10^-7 m
B) 3.86 × 10^-7 m
C) 4.83 × 10^-8 m
D) 9.66 × 10^-8 m
E) 8.69 × 10^-8 m