CONCAVE AND CONVEX LENS Applications of lenses.pptx

Lenses

1. SCIENCE 10 GERALD N. OLIDAN TEACHER

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 What is a refraction? How do the LOST of image formed in concave lens compared to the LOST of image formed in convex lens 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

7. CONCAVE LENS