Two converging lenses, the first with focal length 10.0 cm and
the second with focal length 20.0 cm, are separated by 40.0 cm. An
object, 3.00 cm in height, is placed 30.0 cm in front of the first
lens. Which of the following characteristics does the final image
have? real and upright real and inverted virtual and upright
virtual and inverted none of these choices are correct
Two lenses, one converging with focal length 22.0 cmcm and one
diverging with focal length −− 11.0 cmcm , are placed 25.0 cmcm
apart. An object is placed 60.0 cmcm in front of the converging
lens.
Part A
Find the final image distance from second lens. Follow the sign
conventions.
Express your answer to two significant figures and include the
appropriate units.
Part B
Determine the magnification of the final image formed. Follow
the sign conventions.
Express your answer using...
Two thin lenses with a focal length of magnitude 12.0 cm, the
first diverging and the second converging, are located 9.00 cm
apart. An object 2.50 mm tall is placed 20.0 cm to the left of the
first (diverging) lens. (a) How far from this first lens is the
final image formed? (b) Is the final image real or virtual? (c)
What is the height of the final image? Is it noninverted or
inverted?
Two converging lenses, each of focal length 15 cm, are placed 52
cm apart, and an object is placed 30 cm in front of the first
lens
(a) Where is the final image formed with respect to the second
lense?
60.8 cm behind the second lense
60.8 cm in front of the second lense
47.1 cm in front of the second lense
47.1 cm behind the second lense
(b) What is the magnification of the system?
0.5
–1
–3.1
2.1
Two converging lenses, each of focal length 14.9 cm, are placed
39.5 cm apart, and an object is placed 30.0 cm in front of the
first lens. Where is the final image formed?
The image is located cm ---Location--- in
front of the first lens. in front of the second lens. behind the
second lens.
What is the magnification of the system?
M = ✕
Two converging lenses, each of focal length 14.9 cm, are placed
39.8 cm apart, and an object is placed 29.1 cm in front of the
first. How far from the first lens is the final image formed?
Answer in units of cm.
What is the magnification of the system?
Two converging lenses, each of focal length 14.9 cm, are placed
39.3 cm apart, and an object is placed 30.0 cm in front of the
first lens. Where is the final image formed?
The image is located
cm ---Location--- behind the second lens. in front of
the first lens. in front of the second lens.
What is the magnification of the system?
M = ?
Two converging lenses, each of focal length 14.9 cm, are placed
39.4 cm apart, and an object is placed 30.0 cm in front of the
first lens. Where is the final image formed?
The image is located cm in front of the second
lens.
What is the magnification of the system?
M = ?
Imagine you have two converging lenses. Lens A has a focal
length of 12.5 cm. Lens B has a focal length of 50.0 cm. The
diameter of each lens is 6.50 cm. Assume a near point of 25.0
cm.
a) How could you make a microscope with
4x magnification using these lenses?
b) How could you make a telescope with
4x magnification using these lenses?
c) Which of these is more practical?
Why?
Two identical diverging lenses are separated by 17 cm. The focal
length of each lens is -8.0 cm. An object is located 4.0 cm to the
left of the lens that is on the left. Determine the final image
distance relative to the lens on the right.