Chapter 2- Refraction Flashcards
1
Q
What is faster, speed of sound or speed of light?
A
Speed of light
2
Q
What is refraction?
A
Refraction is where a wave enters a new material and changes speed and direction.
3
Q
What does an objective lens do?
A
Gathers light rays
Makes parallel rays of light converge
4
Q
What is the focal length?
A
Focal Length is the distance between the lens and the focal point
5
Q
At what speed does Light travel at?
A
Light travels at a speed of 300,000,000 metres per second
6
Q
What do all lenses change?
A
The direction of light rays by refraction
7
Q
What does ‘converge’ mean?
A
Move closer together
