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There are 30 multiple choices, I need less then 10 hours.
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1- Conceder the concert A note, vibrating at 440 HZ. How would you calculate the frequency of
the note A, one octave above it.
a- 440+2
b- 440/2
c- 440 x 4
d- 440 x 8
e- 440 x 2
2- In physics, the symbol ‘ e ’ represents?
A- Index of refraction.
B- Doppler shift.
C- Harmonic number.
D- Speed of sounds.
E- Speed of light.
3- Light that passes through a normal eyeball lens onto a retina?
A- Produce right-side up images on the retina.
B- Produce NO images on the retina.
C- Produce upside-down images on the retina.
D- Become parallel rays once they pass through the lens.
E- Cause astigmatism.
4- Witch of these is a correct example of the Doppler effect?
A- A police car siren getting louder as it approaches you.
B- A green light signal appearing red as your approach it.
C- A train signal clanging with a higher frequency after you pass it.
D- A police car siren seeming lower in pitch after the police car passes
you.
E- All of these.
5- This symbol λ represents?
a- The speed of light.
b- wavelength.
c- celerity.
e- index of refraction.
Answer these questions based on the electromagnetic
6.Comparing radio waves to gamma rays-radio waves have a:
a. Greater wavelength
b. Greater energy
c. Grater frequency
d. Greater amplitude
e. None of the above
7- In a vacuum, every type of electromagnetic wave has the same:
a. Frequency
b. Speed
c. Wavelength
d. Amplitude
e. All the above
f. None of the above
8- GBV is also known as:
a-
b-
c-
d-
e-
9- where would you find the human voice on the electromagnetic spectrum ?
a. in the radio range.
b. In the microwave range.
c. You wouldn’t
d. In the UV range
e. In the IR range
10- considers the radio station WTMD, 89.7. What does this number
represent?
a. The frequency of the radio wave
b. The wavelength of the radio wave
c. The amplitude of the radio wave
d. The frequency of the radio wave
e. The speed of the radio wave
f. Nothing-it has no physical significance
11- the main distinction between mechanical waves and electronic waves are:
a.
b.
c.
d.
e.
electromagnetic waves require a medium.
electromagnetic waves ONLY travel in a vacuum.
Mechanical waves are always sine waves.
Mechanical waves are caused by atomic processes.
Mechanical waves require a medium.
Questions 12-14
12- what is the wavelength of THIS harmonic?
a.
b.
c.
d.
e.
20 cm
10 cm
5 cm
40 cm
None of these.
13- what is the frequency of the harmonic that would come next in the series?
a.
b.
c.
d.
e.
50 Hz
100 Hz
75 Hz
25 Hz
500 Hz
14- what is true about harmonicas that you would see as you move up the series:
a.
b.
c.
d.
e.
Each has the same speed
The speed gets higher
Wavelength gets higher
Amplitude gets higher
Frequency decreases
15- which of the following pictures correctly illustrates light ray reflection.
e. all of these are correct.
16- which of the following best describes energy
a-speed of an object
b- high of an object
c-temperature of an object
d-calculated quantity related to measurement
e-momentum of an object
17- which of the following picture correctly represent light going from air into glass??
17-18\e. All of these pictures above.
19- what is the focal points of the convex lens?
abcde-
The address of the lens
Where only virtual images form
Where images form only when light rays are initially parallel.
Where images can never form.
Where real images always form
20- Edwin Hubble discovered that nearly all galaxies (particularly distant ones were red shifted
“this suggested that=
a-the universe was expanding
b- the universe was shrinking
c-the universe was at rest neither shrinking nor expanding
d- the universe revolved around the earth
e-There were other earth- like planets
21, this is an overhead view of a flat bathroom mirror, at which spots, if you were
to stand there, could you see yourself?
________________________ D. all place
A
B
C
E. B+C
Only
22. This is an overhead view of a flat mirror. The represents where you are
standing. At which spots, could another person see you in the mirror?
__________________________
*
A
B
E.all
but A
C
D
23. Where does “index of fraction” mean?
A. It is a measure of the frequency Of light
B. It is a way to describe how brigit kahta is
C. It is a measure of volume change in a sound wave
D. It is a way to describe how much light is slowed down in a new medium
E. It is the new angle that a light ray has when entering a new medium
24. You are underwater with a laser aiming it out of the water. Which picture best
indices this?
25. A sonic boom is experienced when:
A. An object travels faster than the speed of light
B. An object travels at the speed of light
C. An object travels at half the speed of sound
D. Any time an object moves- we just don’t usually hear the sonic booms
E. An object travels at a speed grater than the speed of sound
26-27- examine the picture below. The . represents a tuning fork that has
been ?????. The circles are sound waves that are expanding.
26- the tuning fork is:
a- Moving to the left
b- Moving to the right
c- Not moving
d- Moving back and forth.
27- at witch point would a person; if they were standing there, hear greatest
frequency of sounds? See letters above.
a- A
b- B
c- C
d- D
e- Frequency is the same everywhere.
28- what is the wavelength of a sound wave (392 Hz), if the speed of sound is
340 m/s?
A-392/340
B- 340/392
C- 340 *392
D- 340 + 392
E- 392 – 340
29- Witch color laser has the longest wavelength?
A- Violet
B- Red
C- Green
D- Blue
E- All have the same wavelength (in a vacuum)
30. Which of these is the unit for frequency ?
1.dB
2.M/S
3.Hz
4.T
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