Magnification and Power Flashcards
1
Q
What type of lens does a magnifying glass use?
A
Converging
2
Q
One way to say how you know it’s a virtual image?
A
You can’t project a virtual image onto a screen
3
Q
What does a powerful lens have?
A
A short focal length.
4
Q
What is the unit for focal length?
A
m, metres
5
Q
What is the unit for power (relating to lens power)?
A
D, dioptres
6
Q
What is the power for a converging lens?
A
Positive
7
Q
What is the power for a diverging lens?
A
Negative
