physics 1320 exam 1
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
