Conceptual Physics

Chapter 33 Problems

Conceptual Problems

C.1 An object is placed between the focal point of a converging lens and a distance twice the focal length from the lens. Draw a

ray diagram to determine the nature of the image and describe the image.

i. Virtual; larger; upright

ii. Real; smaller; inverted

iii. Virtual; smaller; upright

iv. Real; larger; inverted

v. Real; larger; upright

C.2 An object is placed between a converging lens and its focal point. Draw a ray diagram to determine the nature of the image
and describe the image.

i. Virtual; larger; upright

ii. Real; smaller; inverted

iii. Virtual; smaller; upright

iv. Real; larger; inverted

v. Real; larger; upright

C.3 An object is placed in front of a diverging lens. Draw a ray diagram to determine the nature of the image.

i. Virtual; larger; upright

ii. Real; smaller; inverted

iii. Virtual; smaller; upright

iv. Real; larger; inverted

v. Real; larger; upright

C.4 An object is placed farther from a converging lens than twice the lens' focal length. Draw a ray diagram to determine the

nature of the image and describe it.

i. Virtual; larger; upright

ii. Real; smaller; inverted

iii. Virtual; smaller; upright

iv. Real; larger; inverted

v. Real; larger; upright

C.5 A single lens is used to create a real image. Is the image upright or inverted? Explain.

Upright Inverted

C.6 A converging lens is placed very far away from an object, so that an image is created very near the focal point of the lens.
The image is real, smaller than the object, and inverted. As you move the lens closer to the object, (a) does the image get
farther away from the lens, or closer to it? (b) Does the image get larger or smaller? When the lens reaches a distance of
twice the focal length from the object, (c) where is the image located? (d) What is the nature of the image at this point?
(a) Farther Closer
(b) Smaller Larger
(c) i. Infinity
ii. At the focal point
iii. At twice the focal length
iv. At half the focal length
(d) i. No image: rays refract parallel
ii. Real; larger than the object; inverted
iii. Real; equal size as the object; inverted
iv. Virtual; equal size; upright

C.7 Would you expect mirrors to exhibit chromatic aberration? Why?

Yes No

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