Question

# 1. A bat uses very high frequencies so: a. He will kill the insects he's hunting...

1. A bat uses very high frequencies so:

a. He will kill the insects he's hunting

b. We won't hear them

c. The sound waves will be small compared to the insects

d. The sound waves will be large compared to the insects

e. He can tune in to KMET for the weather report

2. Bees see somewhat into the ultraviolet. This is because:

b. They can see in the dark

c. They evolved with a cooler sun

d. They use UV to zap smaller insects

e. They need to see fine detail with small eyes

3. Short wavelength light

a. Has no reason to live

b. Is the basis of the unified field theory

c. Is very weak

d. Is very energetic

e. Is impossible to find in nature

4. Light will not bend around corners at all.

a. T

b. F

5. The ultimate reason lenses can't produce a perfect image is:

a. Diffraction

b. Sabotage

c. Interference

d. Photons are unpredictable

e. Cost

6. Sound waves are much longer than visible light waves.

a. T

b. F

7. We can hear but not see around corners because

a. Sound travels slowly

b. The amplitudes are different

c. The speed of light is slower than that of sound

d. Light has a shorter wavelength

a. Visible light

b. Microwave

c. X-ray

e. Gamma rays

9. The wavelength of a particle tells about:

a. Everything

b. Nothing

c. Its color

d. The area it may be found in

e. Its frequency

10. What is the wavelength of waves broadcast by a TV station with a

frequency to 10 to the 9th Hz?

a. 800 m

b. 10 cm

c. 3 m

d. 3 x 10 to the 17th m

e. .3 m

11. Without ________ diffraction would prevent any decent image

formation.

a. Lenses

b. Resolution

c. Luck

d. Interference

12. Interference refers to:

a. An illegal maneuver on pass plays

b. Two slits

c. Waves bending around corners

d. Prisms

e. Waves canceling or adding to each other

13. When two waves are out of phase by a 1/2 wavelength

a. resonance occurs

b. constructive interference occurs

c. destructive interference occurs

d. diffraction occurs

14. Only specifically shaped waves can be separated and recombined to

interfere.

a. T

b. F

15. The two rays in a double slit will reinforce if one has traveled

________ farther than the other.

a. 3 meters

b. Half a wavelength

c. One wavelength

16. Waves bounce off other waves.

a. T

b. F

17. If you glance at the surface of a pond very quickly and it appears

flat, you can conclude that there are no waves there.

a. T

b. F

18. Without ________ diffraction would prevent any decent image

formation.

a. Luck

b. Resolution

c. Lenses

d. Interference

19. A diffraction grating serves the same purpose as a ________.

a. Rotisserie

b. Iris

c. Lens

d. Prism

e. Interferometer

20. Diffraction at an opening in an eye or camera limits

a. Brightness

b. Angular resolution

c. Polarization

d. Color

e. It helps everything

21. Diffraction refers to:

a. Cones

b. Prisms

c. Waves canceling or adding to each other

d. A mathematical operation taught in calculus

e. Waves bending around the corners of obstacles.

22. A double slit can be used to separate colors.

a. T

b. F

23. The two slits in Young's experiment were to:

a. Double the cost

b. Double the wavelength

c. Force the light to take two different paths

d. Double the complexity

e. Befuddle the photons

24. Interference refers to:

a. Two slits

b. Prisms

c. Waves canceling or adding to each other

d. An illegal maneuver on pass plays

e. Waves bending around corners

25. A larger lens produces a smaller diffraction pattern.

a. T

b. F

26. A larger opening will minimize ________ effects.

a. Wave

b. Interference

c. Diffraction

d. Particle

27. The bright and dark pattern Young got in his double slit experiment

proved:

a. He had a poor light source

b. Light acts like a particle

c. Light acts like a wave.

d. He should have used more slits

e. Nothing

28. Light will not bend around corners at all.

a. T

b. F

29. Which doesn't limit angular resolution:

a. The upside down image

b. Diffraction

c. Cones, rods, or grain

d. Lens defects

e. Detector size

30. If two things meet and cancel out at some places, you conclude they

are acting:

b. Like waves

c. Improperly

d. Like particles

e. Like politicians

31. _ _ _ _ _effects show that a perfect image is impossible.

a. Particle

b. Interference

c. Wave

d. Diffraction

32. When two waves are out of phase by a 1/2 wavelength

a. resonance occurs

b. constructive interference occurs

c. destructive interference occurs

d. diffraction occurs

33. The ultimate reason lenses can't produce a perfect image is:

a. Cost

b. Interference

c. Photons are unpredictable

d. Sabotage

e. Diffraction

34. Only specifically shaped waves can be separated and recombined to

interfere.

a. T

b. F

35. The photoelectric effect was explained by Einstein on the basis of

light acting like ________.

a. A particle

b. Diffraction

c. A wave

d. Interference

36. A photon is ________ of light.

a. A particle

b. Diffraction

c. A wave

d. Interference

37. Radio telescopes are large because of the large ________.

a. Frequency

b. Diffraction

c. Wavelength

d. Interference

e. Particle

38. Radio telescopes give worse angular resolution than similar

telescopes using visible light--the reason is:

a. Radio waves bend more in space

b. They are not well designed

c. Light is faster

e. They do?

39. Red light (long wavelength) gives a sharper image than blue light

(short wavelength).

a. T

b. F

40. The two rays in a double slit will reinforce if one has traveled

________ farther than the other.

a. Half a wavelength

b. One wavelength

c. 3 meters

41. We can hear but not see around corners because

a. The speed of light is slower than that of sound

b. Light has a shorter wavelength

c. Sound travels slowly

d. The amplitudes are different

42. One telescope is approximately twice as big as another. How would

its angular resolution compare?

a. 1/2 as good

b. The same

c. 1/4 as good

d. Twice as good

e. Four times as good

43. Waves bounce off other waves.

a. T

b. F

44. X-rays are much shorter than visible light. An x-ray telescope

would be expected to have very good resolution.

a. T

b. F

45. Young's double slit experiment proved light acts like ________.

a. Interference

b. A wave

c. Diffraction

d. A particle

46. If the color of the light used in Young's experiment were changed

to a shorter wavelength, the lines would be closer together.

a. T

b. F

47. If you cover one of the slits in Young's double slit experiment,

half the bright lines will vanish.

a. T

b. F

48. Angular resolution refers to:

a. The smallest angle you can distinguish between two objects

b. Protractors

c. Marriage counseling

d. A solution unsatisfactory to all parties concerned

49. Angular resolution is good if

a. The "Decimal Angle" bill passes

b. Far objects are in focus

c. Objects close together can be distinguished from each other

d. Close objects are in focus

e. Angles are sharp

50. Diffraction at an opening in an eye or camera limits

a. Polarization

b. Angular resolution

c. Color

d. It helps everything

e. Brightness

51. A lens solves the problems mentioned above, but now there is a

problem with:

a. Resolution

b. Upside down

c. Complexity

52. Which doesn't limit angular resolution:

a. The upside down image

b. Detector size

c. Lens defects

d. Cones, rods, or grain

e. Diffraction

53. _ _ _ _ _effects show that a perfect image is impossible.

a. Wave

b. Diffraction

c. Interference

d. Particle

54. Radio telescopes give worse angular resolution than similar

telescopes using visible light--the reason is:

a. They are not well designed

b. They do?

c. Radio waves bend more in space

e. Light is faster

55. One telescope is approximately twice as big as another. How would

its angular resolution compare?

a. Four times as good

b. The same

c. Twice as good

d. 1/2 as good

e. 1/4 as good

56. X-rays are much shorter than visible light. An x-ray telescope

would be expected to have very good resolution.

a. T

b. F

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