TEST ONE REVIEW

1. A(n) _____ wave requires a medium for propagation and its speed depends on _____. a. mechanical, the medium through which its traveling b. electromagnetic, the medium through which its traveling c. electromagnetic, the medium through which its traveling d. electromagnetic, the amount of energy in the wave

A

16. A 10.0 cm tall marker is placed 40 cm in front of a concave mirror with a focal distance of 20 cm. How tall will the marker's image be? a. - 10 cm b. - 5.0 cm c. 0.0 cm d. 5.0 cm

A

22. For a concave lens, _____. a. the image formed will always be virtual, upright and reduced b. the image formed will always be real, upright and reduced c. the image formed will always be virtual, inverted and enlarged d. the image formed will always be real, inverted and reduced.

A

24. What is the speed of light through water (n = 1.33)? a. 2.25 x 108 m/s b. 2.63 x 108 m/s c. 3.00 x 108 m/s d. 3.38 x 108 m/s

A

25. A 1.8 m tall woman is standing 5.0 m in front of a convex lens with a focal length of 3.0 m. What is the magnification factor for her image in the lens? a. - 1.5 b. - 1.0 c. 0.0 d. 1.0 e. 1.5

A

27. Which of the following can produce a virtual image with a magnification of 0.5? I. convex mirror II. concave mirror III. convex lens IV. concave lens a. I and IV only b. II and IV only c. I and II only d. III and IV only e. I, II, III, and IV

A

29. Consider the diagram above. Which of the following terms describe the image that is formed on the other side of the lens? a. real, inverted and enlarged b. real, inverted and reduced c. virtual, upright and enlarged d. virtual, upright and reduced e. virtual, inverted and enlarged

A

3. A wave has a wavelength of 0.5 m and a frequency of 4 Hz. What is the speed of the wave? a. 2 m/s b. 4 m/s c. 8 m/s d. 12 m/s

A

5. Which of the following are the same for X-rays, FM radio waves, and gamma rays traveling through air? a. The waves' speeds b. The waves' frequencies c. The waves' wavelengths d. All of the above

A

For the lens below, an object 15 cm tall is placed 34 cm away from a convex lens with a focal length of 20 cm. 44. How far from the lens will the image appear? a. 48.6 cm b. 33.4 cm c. 24.1 cm d. 18.7 cm

A

36. Consider the concave mirror above. Which of the following is true for the image formed? Choose all that apply. a. the image is virtual b. the image is real c. the image is upright d. the image is inverted e. the image is enlarged f. the image is reduced

A,C,E

For the lens below, an object with a height of 6 cm is placed 8 cm in front of a convex lens with a focal length of 12 cm. 39. Which of the following apply to the image formed by the mirror above? a. the image is virtual b. the image is real c. the image is upright d. the image is inverted e. the image is enlarged f. the image is reduced

A,C,E

38. At a sporting event, the crowd does "the wave" as they cheer on the teams playing. Which of the following terms could be used to describe the wave? a. mechanical wave b. electromagnetic wave c. longitudinal wave d. transverse wave

A,D

For the mirror below, an object 12 cm tall is placed 25 cm away from a concave mirror with a focal length of 18 cm. 41.Which of the following apply to the image formed by the mirror above? a. the image is virtual b. the image is real c. the image is upright d. the image is inverted e. the image is enlarged f. the image is reduced

A,D,E

21. Which of the following are true for a concave lens? a. Diverging b. Converging c. can produce real images d. can produce virtual images e. can produce upright images f. can produce inverted images

A,E,F

10. The trough to trough or crest to crest distance along a wave is called the _________ and is measured in ______. a. Period | Meters b. Wavelength | Meters c. Period | Seconds d. Wavelength | Seconds

B

12. A convex mirror is known as a _____ because it causes the light rays to _____. a. converging mirror; come together b. diverging mirror; spread apart c. converging mirror; spread apart d. diverging mirror; come together

B

14. What is the magnification factor of the reflection of a candle 1.5 m away from a plane mirror? a. 2.25 b. 1.00 c. 0.67 d. 0.11

B

15. A 1.8 m tall woman is standing 5.0 m in front of a convex mirror with a focal length of 3.0 m. What is the magnification factor for her image in the mirror? a. 0.25 b. 0.38 c. 0.50 d. 0.63

B

19. A light ray traveling through water exits the water into the air. Which of the following statements is true about the light ray? a. The light ray bends toward b. The light ray bends away from the normal and speeds up as it enters the air. c. The light ray bends toward the normal and slows down as it enters the air. d. The light ray bends away from the normal and slows down as it enters the air.

B

2. In electromagnetic waves, the ____ of the wave shows how much energy it carries. a. wave speed b. frequency c. amplitude d. medium

B

20. When you place a pencil in a glass of water, the pencil appears to be broken in two. Which wave behavior explains this occurrence? a. Reflection b. Refraction c. Interference d. Diffraction

B

33. If you stand 2.5 m from a plane mirror, how far from you would your image in the mirror appear? a. 2.5 m b. 5.0 m c. 7.5 m d. 10.0 m

B

37. Consider the concave mirror above. The focal length of the mirror is 25 cm. If the object is placed at 15 cm, how far from the mirror does the image appear? a. - 42 cm b. - 37.5 cm c. 37.5 cm d. 42 cm

B

42.Which of the following cannot be explained by the wave model of light? a. red light diffracts as it passes through an opening approximately the same size as its wavelength b. blue light can eject electrons from a metal plate, but red light cannot c. blue light can create interference patterns when passing through two or more slits simultaneously d. red light reflects off mirrors and refracts through glass.

B

35.A light ray moves from air into a piece of glass. Check all of the following that are true for the light ray as it enters the glass. a. the light speeds up b. the light slows down c. the light bends toward the normal d. the light bends away from the normal

B,C

23. Which of the following are true for a convex lens? a. diverging b. converging c. can produce real images d. can produce virtual images e. can produce upright images f. can produce inverted images

B,C,D,E,F

For the lens below, an object 15 cm tall is placed 34 cm away from a convex lens with a focal length of 20 cm. 43. Which of the following apply to the image formed by the mirror above? a. the image is virtual b. the image is real c. the image is upright d. the image is inverted e. the image is enlarged f. the image is reduced

B,D,E

11. Wave 1 has a frequency of 2 Hz, an amplitude of 10 cm, and is at max height at time t = 0. Wave 2 has a frequency of 1 Hz, an amplitude of 20 cm, and is at max height at time t = 0. What is the difference in wave heights between the two waves at time t = 0.5 seconds? a. 0 cm b. 10 cm c. 30 cm d. 40 cm

C

26. A 1.8 m tall woman is standing in 5.0 m in front of a concave lens with a focal length of 3.0 m. What is the magnification factor of her image? a. 0.00 b. 0.25 c. 0.38 d. 0.50

C

28. Light shines through a diamond (n = 2.42) sitting in a pool of water (n = 1.33) at an angle of 15 degrees from the normal. At what angle from the normal does light escape into the pool of water? a. 24 b. 26 c. 28 d. 30 e. 32

C

32. For a plane mirror, a normal line is an imaginary line that is drawn perpendicular to the surface of the mirror at a point where a light ray strikes. The angle of incidence and the angle of reflection are measured with respect to the normal line. Which of the following is always true? a. the angle of incidence is greater than the angle of reflection b. the angle of incidence is less than the angle of reflection c. the angle of incidence is equal to the angle of reflection d. the angle of incidence can be greater than, equal to or less than the angle of reflection

C

4. For a wave moving through a given medium, as the frequency _____, the wavelength will _____. a. increases, not change b. decreases, not change c. increases, decrease d. increases, increase

C

7. An EM Wave is made of a(n) _______ field and a(n) _________ field oscillating ________ to each other. a. Electric | Mechanical | Parallel b. Mechanical | Magnetic | Parallel c. Magnetic | Electric | Perpendicular d. Magnetic | Mechanical | Perpendicular e. Electric | Magnetic | Parallel

C

8. The oscillation of a transverse wave is _________ to its direction of travel and the oscillation of a longitudinal wave is _________ to its direction of travel. a. Parallel | Perpendicular b. Parallel | Parallel c. Perpendicular | Parallel d. Perpendicular | Perpendicular

C

9. A certain wave has an amplitude of 1.5 m and a frequency of 2 Hz. How long does it take for this wave to move six full wavelengths? a. 1 sec b. 2 sec c. 3 sec d. 4 sec

C

For the lens below, an object with a height of 6 cm is placed 8 cm in front of a convex lens with a focal length of 12 cm. 40. How far from the lens will the image appear? a. - 8 cm b. - 12 cm c. - 24 cm d. - 32 cm

C

13. Light rays that strike a concave mirror parallel to the principle axis will _____. a. follow the law of reflection like a plane mirror b. reflect through the focal point c. will converge d. all of the above

D

17. The focal distance of a concave mirror is 10 cm. An object's image is located 15 cm in front the mirror at a height of negative 2.0 cm. How tall is the object? a. 0.5 cm b. 1.0 cm c. 2.0 cm d. 4.0 cm

D

18. An object is located at the focal point of a concave mirror. The resultant image ____________. a. is inverted, smaller, and real b. is upright, enlarged, and virtual c. is inverted, larger, and real d. does not exist

D

31. A candle is located 28 cm from a lens with a focal length of 15 cm. How far away from the lens should a screen be placed to find the focused image? a. 0.31 b. 15 c. 28 d. 32.3 e. 56

D

34. Diamonds get their sparkle due to total internal reflection. Once light enters the diamond, if the diamond is cut well, the light will strike the internal surface of the diamond at angles larger than the critical angle, which prevents the light from escaping the diamond and keeps it bouncing around inside of the gem. If incident light falls onto a diamond at an angle of 45 degrees, it will refract at an angle of 17 degrees as it enters the diamond. What is the index of refraction of the diamond? a. 1.43 b. 1.75 c. 2.03 d. 2.42

D

6. Order the following EM waves from least (left) to greatest (right) frequency. a. Microwaves < Ultraviolet Light < FM Radio < AM Radio < Visible Light b. FM Radio < Ultraviolet Light < AM Radio < Microwaves < Visible Light c. Visible Light < AM Radio < FM Radio < Ultraviolet Light < Microwaves d. AM Radio < FM Radio < Microwaves < Visible Light < Ultraviolet Light

D

30. A candle is placed in front of a convex lens with a focal length of 16 cm. At which distance(s) from the lens listed below could you place the candle in order to create a real image? a. 4 cm b. 8 cm c. 16 cm d. 24 cm e. 32 cm

D,E