Ray Model of Light Flashcards
1
Q
Light travels in _______ lines.
A
Straight
2
Q
What is a light ray?
A
A line in the direction along which light energy is moving.
3
Q
A light ray travels forever unless it interacts with _____ that causes the light ray to change direction or be _______.
A
Matter
Absorbed
4
Q
An object is a source of light rays. The object may be ___________ or ________.
A
Self-luminous
Reflective
5
Q
How are images formed?
A
When a bundle of light rays are focused.
6
Q
Evidence for the rectilinear propagation of light:(3)
A
- torches, lasers
- shadows
- pin-hole camera
