Question

An object of size 4.0 cm is located 14 cm to the left of a thin biconvex lens with a focal length of +6.5 cm. A second, thin biconcave lens is located 35 cm to the right of the first lens and has a focal length of -6.5 cm. Object and lenses are aligned on a common optical axis.

(a) Sketch the resulting final image by using principal
rays.

(b) Is the final image real or virtual, erect or inverted?
Explain.

(c) Calculate the position and the total magnification of the final
image due to the two lenses.

Answer #1

The final image position calculated on top of this solution.

The final image is left side of the diverging lens indicates is the virtual image. (Part b)

1. A converging lens has a focal length of 14 cm. An object is
18 cm to the left of the lens.
Find the image position
The magnification
Real or virtual?
Erect of inverted?
e. Draw the ray diagram using principal rays and a ruler.
f. If the object was located 7 cm to the left of the lens, draw
the ray diagram.

A converging lens of focal length f1 = +22.5 cm is placed at a
distance d = 60.0 cm to the left of a diverging lens of focal
length f2 = −30.0 cm. An object is placed on the common optical
axis of the two lenses with its base 45.0 cm to the left of the
converging lens. (The thin-lens approximation may be assumed to
hold.) (a) Calculate the location of the final image and its
overall magnification with respect...

An optical system consists of two lenses separated by 35 cm –
first is converging with focal length 10 cm and the second is
diverging with focal length 15 cm. An object is 20 cm to the left
of the first lens. Find the position of the final image using both
a ray diagram and the thin-lens equation. Is the image real or
virtual? Erect or inverted? What is the overall magnification of
the image?

A lens has a focal length of 15 cm. An object is located 8 cm
from the surface of the lens.
a. Calculate how far the image is from the lens.
b. Tell whether the image is real or virtual.
c. Calculate the magnification of the image (state whether the
image is erect or inverted).

5. A biconvex lens with a focal length of 8cm has an object
which is 24 cm to the left of the lens.
(a) Sketch the lens and object – label the principal axis,
optical axis, optical center
(b) Using suitable rays presented in class, show on your sketch
in (a) where the image is expected to be
(c) Based on your sketch in (b) describe the characteristics of
the expected image
(d) Use the lens maker and magnification equation...

Principal Ray Diagrams and Equations
1.) An object is 6 cm in front of a convex mirror with a focal
length of 10 cm.
a.) Use ray tracing alone to determine the location and
magnification of the image. Is the image upright or inverted? Is it
real or virtual?
b.) Use equations alone to determine the location and
magnification of the image. Is the image upright or inverted? Is it
real or virtual?
2.) A 2.0-cm-tall object is 20 cm...

3 parts thx in advanced!
1.An object is placed 18.0 cm in front of a thin lens of focal
length +6.0 cm. Find the image distance. Give your answer in cm,
but enter only the numerical part in the box.
2. An object is placed 24.0 cm in front of a thin lens of focal
length +5.0 cm. What is the lateral magnification? Recall that the
magnification is a unitless ratio.
3.
For the preceding two parts of this problem,...

An object is 17.5 cm to the left of a lens of focal length 8.5
cm. A second lens of focal length -30 cm is 5 cm to the right of
the first lens.
Find the distance between the object and final image formed by
the second lens.
What is the overall magnification?
Is the final image real or virtual? Upright or inverted?

A converging lens with a focal length of 4.8 cm is
located 24.8 cm to the left of a diverging lens having a
focal length of -15.0 cm. If an object is located 9.8
cm to the left of the converging lens, locate and describe
completely the final image formed by the diverging lens.
Where is the image located as measured from the diverging
lens?
What is the magnification?
Also determine, with respect to the original object whether the
image...

3) An object is 17.5 cm to the left of a lens of focal length
8.5 cm. A second lens of focal length -30 cm is 5 cm to the right
of the first lens. a) Find the distance between the object and
final image formed by the second lens. b) What is the overall
magnification? c) Is the final image real or virtual? Upright or
inverted?

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