2. REVIEW
1. What is a concave mirror? Convex mirror?
2. LOST of an image if the object is at F?
3. LOST of an image if the object is in
between C and F?
4. LOST of an image if the object is at C?
3. REFRACTION OF LIGHT IN LENSES
1.What is a refraction?
2.How do the LOST of image formed in
concave lens compared to the LOST of
image formed in convex lens
3.How to apply Ray diagram in convex
and concave lens?
4. REFRACTION The bending of light rays when passing one transparent
medium into another medium.
CONVEX LENS It is thicker in the center than the edges.
- it forms real images depending on position of the object
- It is also called CONVERGING LENS because the light that passes
through it tends to bend at a particular point called the FOCAL POINT
5. CONCAVE LENS It is thicker at the edges and thinner at the center.
- it forms upright and reduced images.
- It is also called DIVERGING LENS because light that passes through it tends
to diverge at a particular point called the FOCAL POINT.
6. IMAGES FORMED BY LENSES
F F F F
V V
1. V VERTEX
CENTER OF LENS
2. FOCAL
POINT/FOCUS A
POINT WHERE LIGHT
RAYS CONVERGE
WHEN PARALLEL
LIGHT RAYS PASS
THROUGH A LENS. ITS
DISTANCE IS CALLED
THE FOCAL LENGTH
