Objective 3.17

describe experiments to investigate the refraction of light, using rectangular blocks, semicircular blocks and triangular prisms.

Objective 3.16

construct ray diagrams to illustrate the formation of a virtual image on a plane mirror.


For plane mirror the image is...
-The same size as the object.
-The same distance as the object from the mirror.
-Virtual (not real)
-Upright
-Laterally Inverted

Objective 3.15

Recall that the angle of incidence equals the angle of reflection.
-A light ray is a narrow beam of light.
-Light Sources:
 Q: How do light rays from the Sun and other light sources reach our eye?
 A: They travel in a straight line directly into our eye.
-Reflected Light:
 Q: How do light rays from a book and other such objects reach our eye?
 A: Light from the Sun or another light source strikes the book and some of the light is reflected into our eye.
-Opaque materials do not let light through.
-Transparent materials do light through.
-Angle of incidence = Angle of reflection.