Units 11 and 12 Review

Waves, Light and Sound

 

Navigate to Answers for:

[ Questions #1-#14 | Questions #15-#28 | Questions #29-#42 | Questions #43-#56 | Questions #57-#68 ]

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15. The number of cycles of a periodic wave occuring per unit time is called the wave's

a. wavelength.

b. period.

c. amplitude.

d. frequency.


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Frequency and Period of a Wave (11 seconds)

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16. A source S generates circular waves on a lake. If the frequency of the source is 2.0 Hz and the wave speed is 5.0 m/s then the distance between adjacent wave crests is

a. 0.20 m.

b. 0.40 m.

c. 1.25 m.

d. 2.5 m.

e. 10 m.


Useful Web Links

The Anatomy of a Wave (6 seconds) | The Wave Equation (7 seconds)

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17. What is the frequency of a water wave that has a speed of 0.4 meter per second and a wavelength of 0.02 meter?

a. 10 hertz.

b. 20 hertz.

c. 0.008 hertz.

d. 0.5 hertz.


Useful Web Links

The Wave Equation (7 seconds)

[ #15 | #16 | #17 | #18 | #19 | #20 | #21 | #22 | #23 | #24 | #25 | #26 | #27 | #28 ]

 

18. Which one of the following properties of a wave is independent of all the others?

a. amplitude.

b. frequency.

c. period.

d. velocity.

e. wavelength.


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The Speed of a Wave (10 seconds)

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19. A pendulum makes 40 vibrations in 20 s. Its period is

a. 0.50 Hz.

b. 0.50 s.

c. 2.0 Hz.

d. 2.0 s.

e. 8.0 x 102 Hz.


Useful Web Links

Frequency and Period of a Wave (11 seconds)

[ #15 | #16 | #17 | #18 | #19 | #20 | #21 | #22 | #23 | #24 | #25 | #26 | #27 | #28 ]

 

20. A period of 0.005 s yields a frequency of

a. 20 HZ

b. 50 Hz

c. 200 Hz

d. 500 Hz

e. 2000 Hz


Useful Web Links

Frequency and Period of a Wave (11 seconds)

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21. The number of waves generated per second by a source is called the frequency of the source.

a. True

b. False


Useful Web Links

Frequency and Period of a Wave (11 seconds)

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22. The SI unit for frequency is hertz.

a. True

b. False


Useful Web Links

Frequency and Period of a Wave (11 seconds)

[ #15 | #16 | #17 | #18 | #19 | #20 | #21 | #22 | #23 | #24 | #25 | #26 | #27 | #28 ]

 

23. Doubling the frequency of a wave source doubles the speed of the waves.

a. True

b. False


Useful Web Links

The Wave Equation (7 seconds)

[ #15 | #16 | #17 | #18 | #19 | #20 | #21 | #22 | #23 | #24 | #25 | #26 | #27 | #28 ]

 

24. A vibrating object with a frequency of 200 Hz produces sound which travels through air at 360 m/s. The number of meters separating the adjacent compressions in the sound wave is

a. 0.900.

b. 1.80.

c. 3.60.

d. 7.20.

e. 200.


Useful Web Links

The Anatomy of a Wave (6 seconds) | The Wave Equation (7 seconds)

[ #15 | #16 | #17 | #18 | #19 | #20 | #21 | #22 | #23 | #24 | #25 | #26 | #27 | #28 ]

 

25. If the frequency of a wave is doubled and if the speed remains constant, its wavelength is

a. quartered.

b. halved.

c. unchanged.

d. doubled.


Useful Web Links

The Wave Equation (7 seconds)

[ #15 | #16 | #17 | #18 | #19 | #20 | #21 | #22 | #23 | #24 | #25 | #26 | #27 | #28 ]

 

26. The line X represents the boundary between two dissimilar springs. A pulse is shown approaching the boundary in diagram 5-7. Which one of the sketches in diagram 5-8 shows a possible configuration of the system shortly after the pulse reaches the boundary?

a. A

b. B

c. C

d. E


Useful Web Links

Boundary Behavior (14 seconds)

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27. When a pulse reaches a boundary between two different media, it will be

a. reflected, only.

b. transmitted, only.

c. partly reflected and partly transmitted.

d. neither reflected nor transmitted.


Useful Web Links

Boundary Behavior (14 seconds)

[ #15 | #16 | #17 | #18 | #19 | #20 | #21 | #22 | #23 | #24 | #25 | #26 | #27 | #28 ]

 

28. The diagram 5-62 shows a transverse pulse traveling along a heavy rope toward its junction with a lighter rope. Which of the diagrams 5-63 best illustrate the ropes at the instant that the reflected pulse again passes through its orignal position marked X?

a. A

b. B

c. C

d. D

e. E


Useful Web Links

Boundary Behavior (14 seconds)

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Units 11 and 12 Review - Questions Only

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[ Questions #1-#14 | Questions #15-#28 | Questions #29-#42 | Questions #43-#56 | Questions #57-#68 ]

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This page last updated on December 15, 1998.