1. If an object is red
in sunlight? What color is it under pure green light?
3. About afterimage, first we see a red paper, and later we see cyan in the white paper.
This is because of (A)positive
afterimage. (B)negative afterimage.
4. Why we see cyan in
(A)Because our receptors of the red decrease their
(B)Because our receptors of the cyan decrease their
5. Which one is correct?
(A)In CIE color notation, the primary colors are
red, green, and blue in real life.
(B)In Munsell color cycle, some colors opposite to
their complementary colors.
(C)After subtractive mixture, the brightness is the average of colors mixed.
(D)After additive mixture, the brightness is the average of colors mixed.
6. What kind of light does CD-ROM use to
In visible light, what's the shortest wave length? (1m = 1010 Å)
Å (C)4000 Å
8. What is electromagnetic wave below?
Again! What is electromagnetic wave below?
(D)none of above
10. Assuming that the distance of the earth and a
planet is 9,054,000,000 km.
How long does light take flying from here to the planet? About
seconds. (C)10000 seconds.
Which color is NOT one of the primary colors of the light?
12. If a light enters a denser medium, from air to glass, for example, what will happen?
(A)It will be bent away from the normal.
(B)It will be bent toward the normal.
(C)total internal reflection
13. We can't stay under burning sun too long, because it's dangerous.
We might caught skin cancer because of
14. Which kind of glasses can spread out incident light?
(A)glasses for nearsightedness
(B)glasses for farsightedness
(D)reading glasses for old people
Who invented a electric light?
(C)Thomas Alva Edison
About a secondary rainbow, which one is correct?
(A)It's more obvious than a primary rainbow.
(B)It took one reflection and two refraction to form a secondary rainbow.
(C)A secondary rainbow. Its red light is at inner, purple light is at outer.
(D)Always, if we see the rainbow, we can see the secondary rainbow, too.
Which kind of light has the fastest speed?
(D)all of them are
We saw "Buzz Light Year" in Toy Story and Toy Story 2. A light year is
(A)the distance light can run in a year.
(B)the time light takes to run in a year.
(C)a year that is bright.
19. What can light do?
(A)deliver the power
(B)shine the world
(C)measure something precisely
(D)all of above
Superman can shoot red "light" from his eyes. It can burn the target. What kind
of light it might be?