Reflection (pulled from 8.2 deck)

Question 1

reflection

Answer 1

the rebounding of incident light waves at the boundary of a medium

the light waves travel BACK through the first medium rather than absorving into the second medium

Question 2

law of reflection

Answer 2

incident angle = reflected angle

both measured from the normal line (perp. to the boundary of the medium)

Question 3

all angles in optics are measured from which reference line

Answer 3

the normal line (perpendicular to the medium boundary)

NOT from the surface of the medium

Question 4

plane mirrors

Answer 4

flat reflective surface

Question 5

virtual images

Answer 5

form BEHIND the mirror

image appears to be the same distance behind the mirror as the object is in front of the mirror

Question 6

what type of images to plane mirrors form

Answer 6

virtual images

Question 7

real image

Answer 7

form on the same side of the mirror as the actual object

always inverted

Question 8

2 varieties of spherical mirrors

Answer 8

concave

convex

Question 9

center of curvature

Answer 9

the center of the spherically shaped mirror IF it extended into a complete sphere

Question 10

radius of curvature

Answer 10

the distance between the center of curvature and the mirror

Question 11

concave mirror

Answer 11

the center of curvature is located in front of the mirror

Question 12

convex mirror

Answer 12

The center of curvature is located behind the mirror

Question 13

concave mirrors cause parallel incident light rays to:

Answer 13

converge

Question 14

convex mirrors cause parallel incident light rays to:

Answer 14

diverge

Question 15

focal point (F)

Answer 15

the point at which all parallel beams are “focussed” after reflection in the mirror

Question 16

focal length (f)

Answer 16

the distance between the focal point (F) and the mirror

Question 17

magnification (m)

Answer 17

a dimensionless value that is the ration of the image distance to the object distance

also gives the ratio of the size of the image to the size of the object

Question 18

if m < 0

Answer 18

the image is inverted (upside down)

Question 19

if m > 0

Answer 19

the image is upright

Question 20

if |m| < 1

Answer 20

the image is reduced

Question 21

if |m| > 1

Answer 21

the image is enlarged

Question 22

if |m| = 1

Answer 22

the image is the same size as the object

Question 23

optics equation

Answer 23

Question 24

magnification equation

Answer 24