Luis is nearsighted. To correct his vision, he wears a diverging eyeglass lens with a focal length of -0,50 m. When wearing glasses, Luis looks not at an object but at the virtual image of the object because that is the point from which diverging rays enter his eye. Suppose Luis, while wearing his glasses, looks at a vertical 10-cm-tall pencil that is 2.0 m in front of his glasses. Heview | Constants Your answer to part b might seem to suggest that Luis sees everything as being very tiny. However, the apparent size of an object (or a virtual image) is determined not by its height but by the angle it spans. In the absence of other visual cues, a nearby short object is perceived as being the same size as a distant tall object if they span the same angle at your eye. From the position of the lens, what angle is spanned by the actual pencil 2.0 m away that Luis sees without his glasses? And what angle is spanned by the virtual image of the pencil that he sees when wearing his glasses? Express your answers in degrees and separated by a comma. VΕΙ ΑΣΦ d Grin ? 0.0 8.5

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Luis is nearsighted. To correct his vision, he wears
a diverging eyeglass lens with a focal length of
-0.50 m. When wearing glasses, Luis looks not at
an object but at the virtual image of the object
because that is the point from which diverging rays
enter his eye. Suppose Luis, while wearing his
glasses, looks at a vertical 10-cm-tall pencil that is
2.0 m in front of his glasses.
Review | Constants
Your answer to part b might seem to suggest that Luis sees everything as being very
tiny. However, the apparent size of an object (or a virtual image) is determined not by its
height but by the angle it spans. In the absence of other visual cues, a nearby short
object is perceived as being the same size as a distant tall object if they span the same
angle at your eye.
From the position of the lens, what angle is spanned by the actual pencil 2.0 m away
that Luis sees without his glasses? And what angle is spanned by the virtual image of
the pencil that he sees when wearing his glasses?
Express your answers in degrees and separated by a comma.
IVE ΑΣΦ
d
?
0.0 8.5
Transcribed Image Text:Luis is nearsighted. To correct his vision, he wears a diverging eyeglass lens with a focal length of -0.50 m. When wearing glasses, Luis looks not at an object but at the virtual image of the object because that is the point from which diverging rays enter his eye. Suppose Luis, while wearing his glasses, looks at a vertical 10-cm-tall pencil that is 2.0 m in front of his glasses. Review | Constants Your answer to part b might seem to suggest that Luis sees everything as being very tiny. However, the apparent size of an object (or a virtual image) is determined not by its height but by the angle it spans. In the absence of other visual cues, a nearby short object is perceived as being the same size as a distant tall object if they span the same angle at your eye. From the position of the lens, what angle is spanned by the actual pencil 2.0 m away that Luis sees without his glasses? And what angle is spanned by the virtual image of the pencil that he sees when wearing his glasses? Express your answers in degrees and separated by a comma. IVE ΑΣΦ d ? 0.0 8.5
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