Introduction To Physical Science

Chapter 19: Light, Mirrors, and Lenses

Section 4 Self-Check Quiz-Eng.

1
What type of lenses do microscopes use?
A)concave
B)plane
C)convex
D)reflecting
2
What is the main purpose of a telescope?
A)to gather as much light as possible
B)to magnify an image
C)to make objects appear closer
D)to reflect light at an object
3
Large telescopes magnify with what?
A)lenses
B)computers
C)mirrors
D)cameras
4
What is special about zoom lenses?
A)They have a short focal length.
B)They have a long focal length.
C)They allow you to change the focal length.
D)They have no focal length.
5
What happens to an image when the focal length of a lens is reduced?
A)It gets larger.
B)It remains the same.
C)It gets smaller.
D)It goes out of focus.
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