Question

$\bullet$$\bullet$ Sensitive eyes. After an eye examination, you put some eyedrops on your sensitive eyes. The cornea (the front part of the eye) has an index of refraction of 1.38, while the eyedrops have a refractive index of $1.45 .$ After you put in the drops, your friends notice that your eyes look red, because red light of wavelength 600 $\mathrm{nm}$ has been reinforced in the reflected light. (a) What is the minimum thickness of the film of eyedrops on your cornea? (b) Will any other wavelengths of visible light be reinforced in the reflected light? Will any be cancelled? (c) Suppose you had contact lenses, so that the eyedrops went on them instead of on your corneas. If the refractive index of the lens material is 1.50 and the layer of eyedrops has the same thickness as in part (a), what wavelengths of visible light will be reinforced? What wavelengths will be cancelled?

          $\bullet$$\bullet$ Sensitive eyes. After an eye examination, you put some
eyedrops on your sensitive eyes. The cornea (the front part of
the eye) has an index of refraction of 1.38, while the eyedrops
have a refractive index of $1.45 .$ After you put in the drops, your
friends notice that your eyes look red, because red light of
wavelength 600 $\mathrm{nm}$ has been reinforced in the reflected light.
(a) What is the minimum thickness of the film of eyedrops on
your cornea? (b) Will any other wavelengths of visible light be
reinforced in the reflected light? Will any be cancelled?
(c) Suppose you had contact lenses, so that the eyedrops went
on them instead of on your corneas. If the refractive index of
the lens material is 1.50 and the layer of eyedrops has the same
thickness as in part (a), what wavelengths of visible light will
be reinforced? What wavelengths will be cancelled?

Added by Logan W.

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