1. The document discusses the formation of images by convex and concave lenses. 2. For a convex lens, the type, orientation, size and location of the image depends on where the object is placed relative to the focal points of the lens. 3. For a concave lens, the image is always virtual, upright and smaller than the object, regardless of the object's location.

1. Objectives:Objectives:Compare the object and image in terms ofa. sizeb. location from the lensc. orientationd. type1. Locate the image in a lens through ray diagram.2. Describe the image in terms ofa. size b. location from the lensc. orientationd. type

2. IMAGE FORMATION IN CONVEX LENS(CONVERGING)

3. Rules1. Any incident ray traveling parallel to the principal axis of a converging lens will refract through the lens and travel through the focal point on the opposite side of the lens.

4. 2. Any incident ray traveling through the focal point on the way to the lens will refract through the lens and travel parallel to the principal axis.

5. OBJECT OUTSIDE 2F F2F F’2F’IMAGE: between F’ and 2F’, smaller, inverted, real

6. OBJECT: BETWEEN 2F and F F2F F’2F’IMAGE: OUTSIDE 2F’ and F’, bigger, inverted Real

7. OBJECT AT 2F F2F F’2F’IMAGE: AT 2F’, same size, inverted, real.

8. OBJECT at F F2F F’2F’IMAGE: No image

9. OBJECT between F and lens F2F F’2F’IMAGE: INFRONT of the lens, bigger, UPRIGHT, VIRTUAL

10. OBJECT: at INFINITY IMAGE: Just a point, Real and Inverted

11. IMAGE FORMATION IN CONCAVE LENS(DIVERGING)

12. OBJECT: At any point.IMAGE: smaller, upright, virtual.

13. Between F’ and 2F’, smaller, inverted, realAt 2F’, same size, inverted, realOutside 2F’, bigger, inverted, realNo imageIn front of the lens, bigger, upright, virtualIn front of the lens, bigger, upright, virtualIn front of the lens, bigger, upright, virtual

14. Assignment:What are the equations in solving problems about lens?Bring scientific calculator