A=transverse, B=longitudinal
A=wave, B=particle
A=electron, B=magnet
A=line, B=pulse

2. The sharks in Dr. Evil’s pool have laser beams attached to their head. One of them looks up when the water is still, to see Austin Powers about to be dumped in. If the critical angle for a glass-water surface is 45° for red light, what angle (from the normal!) would it be safe for Austin Powers to be looked at by the shark?

0°
20°
40°
60°

3. An object is placed at a such a distance from a convex lens that its can be detected using a screen on the other side of the lens. The image has exaclty the same height as the object. Its distance from the screen is 16.0 cm. What is the power of the lens?

6.25 D
8.00 D
12.5 D
16.0 D

4.

Only real, magnified images
Real and virtual diminished images
Real and virtual magnified images
None of the above

can be produced by magnifying glasses.

5. The images produced by a

a concave lens
a convex lens
a plane mirror
an optical fiber

are all virtual and diminished.

6. An orange filter, and two polarizers, arranged with their slits perpendicular are placed in front of a source of white light. What will happen when the light is turned on?

white light will get through
orange light will get through
yellow and red light will get through
no light will get through

7. What colors of light do you mix to make magenta?

red and white
red and blue
red and green
green and blue

8. A magnifying lens with focal length 20.0 cm is placed 15.0 cm away from a cricket. What will be the magnification of the cricket?

1.25
3.33
4.00
8.57

9. A green filter lets through which color(s) of light?

only green
all colors but green
blue and yellow
white, blue, and yellow

10. Light is an electromagnetic wave. This means that

it can exist only in a vacuum
it is a type of longitudinal wave
it has either an electric or a magnetic component at any one time
it has both electric and magnetic components at the same time