Describe how a distant object appears through a converging lens.
The image of the object is real, inverted, and reduced at a
at closer objects and very close objects, describe the images. Are
there any differences?
When the object is close(between 2F and F) the image is real,
inverted , and enlarged.
When the object is very close(between F and the lens) the image
is virtual, erect , and enlarged.
The differences is that when the object is close the image is
real and inverted, but when the object is very close the image is
virtual and erect.
are the differences between converging lenses and spherical mirrors?
The only difference between converging lenses and spherical
mirrors exists when the object is at a distance. In a spherical
mirror when the object is at a distance the image is real, erect,
and reduced where as in a converging lens when the object is at
a distance the image is real, inverted, and reduced.
calculate the focal length of the lens.
Depending on the size and curve of the lens the focal length
will vary, but with a typical lens the focal length was experimentally
determined to be ~1.5 in.
the image that was produced on the 3" x 5" and sketch
the ray diagram.
The image of the object is real, inverted, and reduced.
rough estimate values for hi, ho, M, di,
If the object is 5 in. tall(ho) and placed 10 in.(do)
from lens(using the lens from above) then DI =1.76 in., hi=-.90
in., and M=-.18 in.
the thin lens equation mathematically calculate the focal length
of your lens.
The thin lens equation is 1/do+ 1/DI= 1/f this equals
a focal length of 1.49 in.