# Trace: Microscopes

The flashcards below were created by user minna528 on FreezingBlue Flashcards.

1. Real image
• Formed on the side of the lens opposite the object
• inverted image
• image can be viewed on a screen
2. A ______ image is formed on teh side of the lens opposite the object
real
3. A ______ image is inverted and formed by the convergence of light rays at a given plane
real
4. Virtual image
• diverge from a plane on the same side of the lens as the object
• image is erect (upright)
• image cannot be viewed on a screen or a piece of film
• another lens is needed to conver the virutual image into a real image
5. A _____image is on the same side of the lens as the object
virtual
6. A ____image is upright
virtual
7. Optic axis
straight line running through the centers of curvature of two surfaces
8. If the object is on-axis at infinity on the left side of the lens..the lens will form a _______ on the______ at the _______ of the lens
real image on the right side at the principal focus of the lens
9. Focal length
distance from the lens to the principal focus
10. principal focus
lens-image
11. Ideal lens
1/f=1/p +1/q

1/focal length= 1/object distance +1/image distance

if p or q is set to infinity then the other will equal focal length
12. If p approaches the lens on the left side, q will:
recede from the lens on the right side
13. If q and p vary with a fixed f the plot shape is a _____ and the sixe of the image is:
hyperbola

equal to the size of the object
14. Magnification

m=
m=q/p
15. if p=2f=q then:
maginification is 1
16. if p>q then m<1 and there is:
reduction of the image
17. if p<q then m>1 and there is:
magnification of the image
18. If q reaches infinity then magnification reaches infintiy and
it is not a useful magnification
 Author: minna528 ID: 27558 Card Set: Trace: Microscopes Updated: 2010-07-21 17:38:41 Tags: Microscopes trace evidence Folders: Description: Trace evidencce Show Answers: