Download NA 2nd Semester Review Regular Physics No Ans

Regular Physics
nd
2 Semester
Review
Quiz
1. A mass attached to a spring
vibrates back and forth. At
maximum displacement, the
spring force and the
a. velocity reach a maximum.
b. velocity reach zero.
c. acceleration reach a
maximum.
d. acceleration reach zero.
2. Which of the following is
the time it takes to complete a
cycle of motion?
a. amplitude
b. period
c. frequency
d. revolution
3. A musical tone sounded on
a piano has a frequency of
410 Hz and a wavelength
of 0.80 m. What is the speed
of the sound wave?
a. 170 m/s c. 330 m/s
b. 240 m/s d. 590 m/s
4. A student sends a pulse traveling on a taut
rope with one end attached to a post. What
will the student observe?
a. The pulse will not be reflected if the
rope is free to slide up and down on the post.
b. The pulse will be reflected and inverted
if the rope is free to slide up and down on the
post.
c. The pulse will be reflected and inverted
if the rope is fixed to the post.
d. The pulse will not be inverted if the rope
is fixed to the post.
5. How high or low we
perceive a sound to be,
depending on the frequency
of the sound wave, is defined
as the
a. infrasonic wave.
b. frequency.
c. ultrasonic wave.
d. pitch.
6. The Doppler effect occurs
with
a. only sound waves.
b. only compressional waves
c. only water waves.
b. only compressional
waves.
d. all waves.
7. The effects of sound on the
ear are loudness, pitch, and
quality. Loudness is an effect of
____, pitch is an effect of ____,
and timbre is an effect of ____.
a.
b.
c.
d.
intensity; harmonic content; frequency
harmonic content; frequency; intensity
frequency; intensity; harmonic content
intensity; frequency; harmonic content
8. What phenomenon is created
by two tuning forks side by side
that emit frequencies that differ
by only a small amount?
a. resonance
b. interference
c. the Doppler effect
d. beats
9. If you know the wavelength of any
form of electromagnetic radiation, you
can determine its frequency because
a. all wavelengths travel at the same
speed.
b. the speed of light varies for each
form.
c. wavelength and frequency are
equal.
d. the speed of light increases as
wavelength increases.
10. If you are reading a book
and you move twice as far away
from the light source, how does
the brightness at the new
distance compare with that at
the old distance? It is
a. one-eighth
b. one-fourth
c. one-half
d. twice
11. In the diagram above, the image of
object B would be
a. virtual, enlarged, and inverted.
b. real, enlarged, and upright.
c. virtual, reduced, and upright.
d. virtual, enlarged, and upright.
12. In the diagram above, the image of
object B would be
a. real, reduced, and upright.
b. virtual, enlarged, and upright.
c. virtual, reduced, and inverted.
d. virtual, reduced, and upright.
13. Refraction is the term
for the bending of a wave
disturbance as it passes at
an angle from one ____
into another.
a. glass
c. area
b. medium d. boundary
14. When a light ray passes
from water (n = 1.333) into
diamond (n = 2.419) at an angle
of 45°, its path is
a. bent toward the normal.
b. bent away from the normal.
c. parallel to the normal.
d. not bent.
15. A beam of light in air is
incident at an angle of 35°
to the surface of a
rectangular block of clear
plastic (n = 1.49). What is
the angle of refraction?
a. 42° b. 55°
c. 23° d. 59°
16. Which of the following describes
what will happen to a light ray incident
on a glass-to-air boundary at greater
than the critical angle?
a. total reflection
b. total transmission
c. partial reflection, partial
transmission
d. partial reflection, total transmission
17. A repelling force occurs
between two charged objects
when
a. charges are of unlike signs.
b. charges are of like signs.
c. charges are of equal
magnitude.
d. charges are of unequal
magnitude.
18. Which sentence best
characterizes electric conductors?
a. They have low mass density.
b. They have high tensile
strength
c. They have electric charges
that move freely.
d. They are poor heat
conductors.
19. Which of the following is NOT
true for BOTH gravitational and
electric forces?
a. The inverse square distance
law applies.
b. Forces are conservative.
c. Potential energy is a function of
distance of separation.
d. Forces are either attractive or
repulsive.
20. If a conductor is in
electrostatic equilibrium,
the electric field inside the
conductor
a. is directed inward.
b. is directed outward.
c. is at its maximum level.
d. is zero.
21. Two positive point charges are
initially separated by a distance of 2 cm.
If their separation is increased to 6 cm,
the resultant electrical potential energy
is equal to what factor times the initial
electrical potential energy?
a.
b.
c.
d.
3
9
1/3
1/9
22. A uniform electric field with a
magnitude of 500 N/C is directed
parallel to the positive x-axis. If the
potential at x = 5 m is 2500 V, what
is the potential at x = 2 m?
a. 1000 V
b. 2000 V
c. 4000 V
d. 4500 V
23. What will be the electric
potential at a distance of 0.15 m
from a point charge of
6.0 C?
(kc = 8.99 x 109 N•m2/C2)
a. 5.4 x 104 V
b. 3.6 x 106 V
c. 2.4 x 106 V
7
d. 1.2 x 10 V
24. A 0.25 F capacitor is
connected to a 9.0 V battery.
What is the charge on the
capacitor?
a. 1.2 x 10–12 C
–6
b. 2.2 x 10 C
c. 2.8 x 10–8 C
–7
d. 3.6 x 10 C
25. A wire carries a steady
current of 0.1 A over a period of
20 s. What total charge moves
through the wire in this time
interval?
a. 200 C
b. 20 C
c. 2 C
d. 0.005 C
26. In alternating current, the
motion of the charges
a. continuously changes in the
forward and reverse directions.
b. is equal to the speed of light.
c. is greater than the speed of
light.
d. in the direction of the electric
field.
27. A light bulb has a
resistance of 240 
when operating at 120
V. What is the current
in the light bulb?
a. 2.0 A c. 0.50 A
b. 1.0 A d. 0.20 A
28. An electric toaster
requires 1100 W at 110 V.
What is the resistance of
the heating coil?
1
a. 7.5 
c. 1.0 x 10 
b. 9.0 
d. 11 
29. If the batteries in a
portable CD player provide a
terminal voltage of 12 V, what
is the potential difference
across the entire player?
a. 3.0 V
c. 6.0 V
b. 4.0 V
d. 12 V
30. Three resistors with
values of 3.0 , 6.0 , and
12  are connected in series.
What is the equivalent
resistance of this
combination?
a. 0.58 
c. 7.0 
b. 1.7 
d. 21 
31. Three resistors connected in
parallel carry currents labeled I1, I2,
and I3. Which of the following
expresses the total current It in the
combined system?
a. It = I1 + I2 + I3
b. It = (1/ I1 + 1/ I2 + 1/ I3)
c. It = I1 = I2 = I3
d. It = (1/I1 + 1/ I2 + 1/ I3)–1
32. What is the equivalent resistance
for the resistors in the figure above?
a. 25 
b. 1.0 x 101 
c. 7.5 
d. 5.0 
33. How is the
relationship between
period and frequency
represented as an
equation?
34. Which carries
a sound wave
more rapidly, a
solid or a gas?
Explain.
35. What is the
energy of a photon
whose frequency is
14
3.0 x 10 Hz? (h =
–34
6.63 x 10 J·s; 1 eV
-19
= 1.60 x 10 J)
36. An object is placed along
the principal axis of a thin
converging lens that has a
focal length of 39 cm. If the
distance from the object to
the lens is 51 cm, what is the
distance from the image to
the lens?
37. What is the electric
force between an electron
and a proton that are
separated by a distance of
–10
1.0 x 10 m?
–19
(e = 1.60 x 10 C,
9
2
2
kc = 8.99 x 10 N·m /C )
38. A hair dryer is connected
across a 120 V outlet. If the
resistance of the hair dryer is
144 , how much power is
dissipated in the form of
electromagnetic radiation and
heat?
39. Three resistors with
values of 16 , 19 ,
25 , respectively, are
connected in parallel.
What is their equivalent
resistance?