Unit 1, lessons 3-4: converging(concave) mirrors and diverging(convex) mirrors

Question 1

Concaved (converging) mirror

Answer 1

mirror shaped so that (<–this side is the reflective surface

Question 2

Terms

Answer 2

c (center of curvature)- center of the surface of the sphere that follows the curve of the mirror
PA (principle axis) - the line through the center of the mirror
v (vertex) - the point where the PA meets the mirror
f (focal point) - where light rays that are parallel to the PA converge

Question 3

Rules of concave(converging) mirrors

Answer 3

1. Light rays parallel to the PA will be reflected through the focal point
2. Light ray pointed at the center of curvature will be reflected upon itself
3. Light rays pointed through f will be reflected parallel to the PA
4. Light rays pointed at the vertex will follow the rules of reflection (Oi = Or), since ray is perpendicualr at that point exactly

Question 4

Convex(diverging) mirror

Answer 4

mirror shaped so that )<–this side is the reflective surface. TERMS ALL SAME, DIGRAM SETUP SAME.

Question 5

SALT for concave(converging) mirrors

Answer 5

Salt will change depending on the location of the object. When object is closer, image is bigger. (think close-up mirror in washroom).
beyond C - Smaller, inverted, between c/f, real
at C - same, inverted, at C, real
between C/F - larger, inverted, beyond c, real
at F - !!!!!!!NO IMAGE!!!!!!!
between F/V - Larger, upright, beyond v, virtual

Question 6

Differences of the rules of convex(diverging) mirrors when compared to concave(converging) mirrors

Answer 6

1. Both the focal point and the center of curvature are BEHIND the mirror
2. The focal point is now a VIRTUAL focal point as it is behind the mirror

Question 7

Rules of convex(diverging) mirrors

Answer 7

1. Light rays parallel to PA are reflected as if it came from the (virtual) focal point
2. A light ray pointed at c is reflected upon itself
3. A ray pointed at f is reflected parallel to the PA