Discussed lens and ray diagram of convex and concave lens

1. LENS
ARNELYN S. LABAO

2. REVIEW

3. REVIEW

4. REVIEW

5. REVIEW

6. REVIEW

8. DIFFERENCES BETWEEN MIRROR AND
LENSES
Mirror is a device based on the principle
of reflection whereas lens is based on
the principle of refraction.

9. REFRACTION OF LIGHT
The change of direction of ray of light as it
passes from one medium to another.

10. LENS
A lens is a curved transparent material that is
smooth and regularly shaped so that when
light strikes it, the light refracts in a
predictable and useful way.
Most lenses are made of glass or very hard
plastic.

11. BASICTYPES OF
LENSES
 Convex
 Concave

12. DIFFERENCE BETWEEN CONVEX AND
CONCAVE LENS

13. IMAGES FORMED BY LENSES
In locating the image formed in lenses graphically, two
important points are considered.The following
important points are enumerated below.
Vertex,V –The geometric center of the lens.
• Focal point/ Focus, F – A point where light rays
converge (or appears to converge)
when parallel light rays pass through a lens. Its
distance
from the vertex is called the focal length

14. THETHREE ‘MOST USEFUL RAYS’ IN
CONVEX LENSES

15. THETHREE ‘MOST USEFUL RAYS’ IN
CONVEX LENSES

16. THETHREE ‘MOST USEFUL RAYS’ IN
CONVEX LENSES

17. RAY DIAGRAM FOR CONVEX LENS
Principal Axis
http://facstaff.gpc.edu/~pgore/PhysicalScience/ray_diagram_sample.jpg

18. DRAWTHE RAY DIAGRAM OF CONVEX
LENS

19. DRAWTHE RAY DIAGRAM OF CONVEX
LENS

20. DRAWTHE RAY DIAGRAM OF CONVEX
LENS