Question

an
object 1 cm high is 15 cm from a convex lens of 10 cm focal length.

A) find the distance and size of the image graphically.

B) find the distance and size of the image
mathematically.

Answer #1

A 3 cm. "tall" object is placed 25 cm. from a convex lens with a
focal length of 50 cm. Determine at what distance a focused image
will appear. Determine the height of this image. Create a sketch
(ray diagram) showing the scenario described above labeled as “A”
and a scenario where everything is the same except the focal length
of the lens is changed to 12.5 cm.

The focal length of a convex lens is 15 cm. An object 30 cm tall
is placed 60 cm from the lens. Which--if any--of the following
image attributes are correct?
A. upright, virtual, 20 cm tall
B. inverted, real, 10 cm tall
C. upright, real, 12 cm tall
D. inverted, virtual, 16 cm tall
E. None of these

Consider a convex lens with a focal length of 5.00 cm. An object
is located at 12.50 cm. The object is 5.50 cm tall. Draw the ray
diagram to scale. Determine the image distance, the height of the
image, the magnification and the characteristices of the image.

A) An object is placed 26 cm in front of a converging lens of
focal length 5 cm. Another converging lens of focal length 10 cm is
placed 20 cm behind the first lens.
1) Find the position of the final image with respect to the second
lens. ____cm
2) Find the magnification of the final image. _____
B) A diverging lens of focal length −12cm projects the image of
an object onto a wall. What is the object distance if...

An object is placed 4 cm away from a concave lens of focal
length 3 cm. A convex lens of focal length 5 cm is placed 4 cm away
from the concave lens in the same direction (so the distance
between convex lens and the object is 8 cm). Use any method to
figure out if the final image is real/virtual, upright/inverted and
find its distance from the convex lens.
Explain in thorough detail.
draw a proper ray diagram for...

You have two convex lens, both with a focal length of 5 cm,
separated by a distance of 1 cm. If you have an object 10 cm from
one of the lenses that is 0.1 cm high, describe the resulting
image.

To obtain the focal length of a convex lens an object is put on
the pricipal axis of the lens.Another side of the lens a screen is
kept.Distance between the screen and object is fixed i.e. 80
cm.Position of convex lens is changed.It is found that for two
different position of convex lens image is formed on the
screen.These position are separated by a distance 20 cm,then the
focal length of the lens is.....

A convex lens with a focal length of magnitude 4.0 cm and a
concave lens with a focal length of magnitude 10 cm are separated
by a distance of 18 cm as shown in the diagram below. The convex
lens is on the left, and the concave lens is on the right. An
object is then placed 6.0 cm to the left of the convex lens.
Locate the final image. State the distance of the final image
to the right...

An object is held 82.7 cm away from a lens. The lens has
a focal length of -31 cm.
A.) Determine the image distance
B.) Determine the magnification.
C.) If the object is 4 cm long, determine the image
height
D.) Which of the following are true about the
image?
The image is virtual
the image is upright
the image is inverted
the image is real
E) Which is true about the lens?
The lens is concave
the lens is...

a convex mirror has a focal length of -20 cm.
a. determine an object location for which the image will be one
half the size of the object
b. draw a ray diagram for this situation
c. the mirror is replaced with a thin lens in exactly the same
position. the image and object do not move. find the focal length
of this thin lens.

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