The speed of light measured by an observer moving toward the source of light is greater than that me

1
True or false
The speed of light measured by an observer moving
toward the source of light is greater than that
measured by a stationary observer.
2

• What is the wavelength of microwaves of 3.5 x 109
  Hz frequency?

3

• What is the frequency of an electromagnetic wave
  with a wavelength of 1.2 x 105 m?

4

• The farther light is from a source,
• a. the more spread out light becomes.
• b. the more condensed light becomes.
• c. the more bright light becomes.
• d. the more light is available per unit area.

5

• Which of these best explains how chlorophyll
  causes the leaves of a tree to appear green?
• a. Chlorophyll bends blue and red light without
  affecting green light.
• b. Chlorophyll absorbs blue and red light while
  reflecting green light.
• c. Chlorophyll destroys white and red light
  while storing green light to use.
• d. Chlorophyll combines sunlight with blue light
  from the sky to form green light.

6

• A home movie projector has an internal lamp with
  a luminous flux of 1500 lm.
• a. How far from the screen should the projector
  be positioned to obtain a screen illuminance of
  3.32 lx?

b.What would be the luminous flux of the
projector if it produced the same screen
illuminance at 4.89 m from the screen?
7
The wavelength of Orange light is
8
If you looked at a light through the
lenses of polarizing sunglasses, a. all of the
light would pass through. b. half of the light
would pass through. c. most of the light would
pass through. d. none of the light would pass
through.
9
The equation for Illuminance is
10
Light moving away from the observer is (red or
blue) shifted.
11
What is changing when the light becomes polarized?
12
An light source approaches an observer at a
velocity of 3.8 x 107 m/s emitting a red light
at 670 nm. What is the observed wavelength?
What color is that?
What is the frequency?