physics 1320 exam 1

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4. A diver shines light up to the surface of a smooth pond at a 10 degree angle to the normal. Some light passes into the air above, and the part that reflects back into the water makes an angle to the normal of...

10 degrees

43. A laser beam strikes a plane mirrorʹs reflecting surface with an angle of incidence of 43°. What is the angle between the incident ray and the reflected ray?

86 degrees

11. Which statement about images is correct? A) Mirrors always produce real images because they reflect light. B) A real image must be erect. C) A virtual image cannot be photographed. D) A virtual image cannot be formed on a screen. E) A virtual image cannot be viewed by the unaided eye.

A virtual image cannot be formed on a screen

33. If sunlight were green instead of white, the most comfortable color to wear on a hot day would be...

Green

44. A magneta piece of paper absorbs what colors of light?

Green

45. A green object is illuminated with yellow light and viewed through a cyan filter. The object will appear...

Green

42. Two electromagnetic waves are traveling at the same speed. The wave with the higher wavelength...

Has a lower frequency than the other wave

30. Light travels fastest...

In a vacuum

36. Compared to the wavelength of incident light, diffuse reflection occurs when the size of surface irregularities is...

Larger

6. Relative to ultraviolet waves, the wavelength of infrared waves is...

Longer

18. At which, if any, of the points indicated if Fig. 23-3 should you place your eye if you wish to see an image of the arrow in the mirror?

Point D

9. Complementary colors are two colors that...

Produce white light when added together

7. Complementary colors are two colors that...

Produce white light when combined

16. Cell phone signals are transmitted by...

Radio waves

27. The three colors that comprise the image on a TV screen are...

Red, blue, and green

41. If the atmosphere were about 40 times thicker, at noon the Sun would appear...

Red-orange

23. The color of an opaque object is the same as the light that is...

Reflected

38. The sky is blue because air molecules in the sky act as tiny...

Resonators that scatter blue light

5. Which of the following is not an electromagnetic wave? A) radio waves B) infrared C) gamma rays D) UV E) sound waves

Sound waves

37. The image seen in a plane mirror is due to...

Specular reflection

2. In Einstein's General Theory of Relativity, gravity is explained as...

The curator of space-time

28. The color of an object depends on the colors of...

The light that illuminates them

25. In looking at yourself in a steamy mirror you wipe just enough moisture away to barely see a full view of your face. If you move back from the mirror you'll see...

The same amount of your face

13. What is the essential difference between microwaves and blue light?

There is no essential difference in the nature of microwaves and blue light other than a difference in frequency and wavelength

22. Electromagnetic waves in a vacuum travel with the speed of light. T or F?

True

14. If you walk toward a mirror at a certain speed, the relative speed between you and your image is...

Twice your speed

34. Which one of the following sets of characteristics describes the image formed by a plane mirror?A) virtual and upright B) virtual and larger than the object C) real and inverted D) virtual and inverted E) real and upright

Virtual and Upright

24. What is the term for light energy that appears violet to red?

Visible Spectrum

39. What is the term for the distance a light wave travels to complete one cycle?

Wavelength

40. A blue object will appear black when illuminated with...

Yellow Light

15. The brightest color emitted by the Sun is...

Yellow-green

29. Which one of the following is the correct representation of the relationship between the speed of a wave ( v), frequency of the wave (f), and its wavelength (λ)? A) v = 2λ B) v = f/λ C) v = λ/f D) v = fλ

v = fλ

46. Different colors of light correspond to different light...

Frequencies

48. The main difference between a radio wave and a red light wave is its...

Frequency and wavelength

49. Object and image for a plane mirror lie...

Equal distances from the mirror

20. According to the law of reflection of light, the angle of incidence is...

Equal to the angle of reflection

19. If the frequency of a certain wave is 10 Hz, its period is...

0.1 seconds

21. What is the frequency of the wave shown in the figure?

0.5 Hz.

26. To see his full height, Blinky Bill who is 1.0 meter tall needs a mirror that is at least...

0.50 meters tall

50. Electromagnetic waves are longitudinal. T or F?

False

1. The greenish blue of water is evidence of the...

Absorption of red light.

31. A yellow object is illuminated with yellow light and viewed through a blue filter. The object will appear...

Black

35. If molecules in the sky scattered red-orange light strongly instead of blue light, sunsets would be...

Blue

47. The yellow clothes of a stage performer appear black when illuminated by light that is...

Blue

17. Which has the highest frequency? A) blue light. B) red light. C) twice your speed. D) none of the above

Blue light

3. The solar radiation curve is a graph of...

Brightness versus frequency

8. The white light from the Sun is a...

Composite of light of all the visible frequencies

32. Consider the appearance of an American flag submerged deep in water. The white stars and red stripes appear...

Cyan and Black

10. Which of the following materials has the slowest speed of light? A) flint glass B) oil C) water D) air E) diamond

Diamond

12. When you read from a printed page, you're seeing reflected light that is...

Diffuse


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