Test 5 Flashcards
The image formed by a plane mirror is always
Virtual
A diverging lens can form only
Virtual image
When an object is placed at the focal length of a converging lens
Not seen
The point where parallel rays of light are converged is called
The focal point
To project an image on a screen the image must be
Real
When light travels from air into glass, it slows down. Which of the following statements is true about the light in the glass?
H
If an object is placed further from a convex mirror than the mirrors focal point then the
H
As light travels into a less dense medium which of the following statements is true?
I
A nearsighted person has an eye that
Is too long
A farsighted person has an eye that
Too short
An object is placed at the center of curvature of a concave mirror what is true
The image is real and inverted
You hold a convex lens a few cm from your face and look through it at a tree. The tree is actually 3m away from you but the image appears 6m away
Virtual
Which color of light, red or blue, Travels faster in crown glass
Red
If you want to start a fire using sunlight which kind of mirror would be most efficient
Concave mirror
When an object is placed further from a convex mirror than the focal length the image is
Smaller and virtual