• The lens of the eye. The crystalline lens of the human eye is a double-convex lens made of material having an index of refraction of 1.44 (although this varies). Its focal length in air is about 8.0 mm, which also varies. We shall assume that the radii of curvature of its two surfaces have the same magnitude. (a) Find the radii of curvature of this lens. (b) If an object 16 cm tall is placed 30.0 cm from the eye lens, where would the lens focus it and how tall would the image be? Is this image real or virtual? Is it erect or inverted? (Note: The results obtained here are not strictly accurate, because the lens is embedded in fluids having refractive indexes different from that of air.)

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Ch24,P39
|39. • The lens of the eye. The crystalline lens of the human eye is
BIO a double-convex lens made of material having an index of
refraction of 1.44 (although this varies). Its focal length in air
is about 8.0 mm, which also varies. We shall assume that the
radii of curvature of its two surfaces have the same magnitude.
(a) Find the radii of curvature of this lens. (b) If an object
16 cm tall is placed 30.0 cm from the eye lens, where would
the lens focus it and how tall would the image be? Is this
image real or virtual? Is it erect or inverted? (Note: The results
obtained here are not strictly accurate, because the lens is
embedded in fluids having refractive indexes different from
that of air.)
Transcribed Image Text:|39. • The lens of the eye. The crystalline lens of the human eye is BIO a double-convex lens made of material having an index of refraction of 1.44 (although this varies). Its focal length in air is about 8.0 mm, which also varies. We shall assume that the radii of curvature of its two surfaces have the same magnitude. (a) Find the radii of curvature of this lens. (b) If an object 16 cm tall is placed 30.0 cm from the eye lens, where would the lens focus it and how tall would the image be? Is this image real or virtual? Is it erect or inverted? (Note: The results obtained here are not strictly accurate, because the lens is embedded in fluids having refractive indexes different from that of air.)
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