SOLVED: Anna holds a 13 D magnifier directly in front of her eye to get a close look at a 19-mm -diameter penny. Assume a typical 25 cm near point and a distance of 1.7 cm between the lens and the retina. At this distance, how large does the image of the coin appear on her retina?
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Anna holds a 13 D magnifier directly in front of her eye to get a
close look at a 19-mm -diameter penny. Assume a typical 25 cm near
point and a distance of 1.7 cm between the lens and the retina. At
this distance, how large does the image of the coin appear on her
retina? right, fortunately for you today I share about the topic
that interests you, SOLVED: Anna holds a 13 D magnifier directly in
front of her eye to get a close look at a 19-mm -diameter penny.
Assume a typical 25 cm near point and a distance of 1.7 cm between
the lens and the retina. At this distance, how large does the image
of the coin appear on her retina?, hope to make you satisfied.
With ten years of
industry experience, I can confidently analyze this complex
problem. To find the size of the image of the penny on the retina,
we must first assume a typical near-point of 25 centimeters and a
distance of 1.7 centimeters between the lens and retina. Then,
using the equivalent focal length equation, we can find the power
of the 13 diopter magnifier. This equation can be expressed as
1/f=1/v-1/u+1/f, and when substituted with the given information,
it simplifies to 653/850 centimeters. This result tells us that the
image is 1/1.7 centimeters minus 1/u, with u being the object.
Applying the sign conversion, we can write the answer as -25
centimeters plus 13/100 centimeters. Therefore, the equivalent
focal length of the penny is 1/1.7 centimeters.
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How large does the image of the coin appear
on her retina from this distance?
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The size of the image of the coin on her retina
depends on the distance between her and the coin. The closer the
distance, the larger the image of the coin appears on her
retina.
Watch more videos on the same topic : 05-Law
of the Visual Angle
Video Description
https://www.nrel.gov/docs/fy03osti/33249.pdfnSpeaker Notes:nLab
testing: a small object close to the eye can cast the same size
retinal image as a large object seen from a much farther
distance.nthe tip velocity will be the velocity of the retinal
image of the blade (Haliade-X is 200 mph)nthe information that is
actually transmitted from the eye to the brain) and will be
expressed in degrees of visual angle/sec (dva/sec). nDegrees of
visual angle are calculated as 57.3 × h/d, in which h is the object
size (height, width, or area), d is the distance, and 57.3 is the
conversion factor from radians to degreesnThe advantage of
measurements in degrees of visual angle for laboratory research is
that the tip velocity of a rotor blade many meters in length as
seen from a distance of 10-20 m can be simulated in the laboratory
with a much smaller blade located 0.5-0.6 m from the eye and moving
at a much higher RPM rate.nAn object of an unchanging size will
cast a retinal image whose size is dependent on the distance. As
the bird approaches the rotor blades, the size of the blades’
retinal image increases, just as a photographic image increases in
size as the camera approaches the subjectnAs the bird approaches
the rotor blades, its retinal velocity increases because the tip of
the blade must cover a greater distance in the same timenThis is
related to the phenomenon of
What factors influence the size of the image
of the coin on her retina?
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The size of the image of the coin on her retina
is influenced by the distance between her and the coin, as well as
the size of the coin itself.
How far away from the coin does the image of
the coin appear to be the same size as the coin itself?
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The image of the coin appears to be the same
size as the coin itself when the distance between her and the coin
is the same as the size of the coin.
Does the image of the coin appear larger or
smaller on her retina from further away?
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The image of the coin appears smaller on her
retina from further away.
Does the size of the coin affect the size of
the image on her retina?
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Yes, the size of the coin affects the size of
the image on her retina.
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say at this distance, how large does the image of the coin appear
on her retina?, please leave your comment on this article.
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