AEB Practice Exam 2 and
HW 4, 5, 6 Questions With
Complete Solutions
1. A cube whose edges are 0.10 m long has one corner at the origin. A magnetic field
with a strength of 0.40 T is applied along the x-axis. What is the magnetic flux through
the shaded face of the cube? (See Figure 23-6 in original material)
a. 4.0×10−24.0×10−2 T⋅⋅m22
b. 0 T⋅⋅m22
c. 4.0×10−14.0×10−1 T⋅⋅m22
d. 4.0×10−34.0×10−3 T⋅⋅m22
Answer: b
, 2. A conducting loop in the form of a circle is placed perpendicular to a magnetic field
of 0.50 T. If the area of the loop increases at a rate of 3.0×10−33.0×10−3 m22/s, what
is the induced emf in the loop?
a. 5.5 mV
b. 1.7 mV
c. 4.3 mV
d. 1.5 mV
Answer: d
3. The inductance of a solenoid 16.0 cm long with a cross-sectional area
of 1.00×10−41.00×10−4 m22 is 1.00 mH. How many turns of wire does this solenoid
have?
a. 1130
b. 159,000
c. 318,000
d. 282
Answer: a
4. A car is approaching a radio station at a speed of 25.0 m/s. If the radio station
broadcasts at a frequency of 74.5 MHz, what change in frequency does the driver
observe?
a. 6.21 Hz
b. 67.0 Hz
, c. 98.3 Hz
d. 64.5 Hz
Answer: a
5. A 4.0 cm tall object is placed 60 cm away from a converging lens of focal length 30
cm. What is the nature and location of the image?
a. The image is real, 2.5 cm tall, 30 cm on the same side as object.
b. The image is real, 4.0 cm tall, 60 cm on the other side of the lens.
c. The image is virtual, 4.0 cm tall, 60 cm on the same side as object.
d. The image is virtual, 2.5 cm tall, 30 cm on the other side of the lens.
Answer: b
6. In a single-slit diffraction experiment, a beam of monochromatic light of wavelength
630 nm is incident on a slit of width 0.400 mm. If the distance between the slit and the
screen is 1.80 m, what are the positions of the first dark fringes?
a. 0.440×10−30.440×10−3 m
b. 0.870×10−30.870×10−3 m
c. 1.30×10−31.30×10−3 m
d. 2.84×10−32.84×10−3 m
Answer: d
, 7. A beam of light in water (n=1.33) enters a glass slab (n=1.50) at an angle of incidence
of 60.0°. What is the angle of refraction?
a. 39.8°
b. 60.0°
c. 90.0°
d. 50.2°
Answer: d
8. An image is 4.0 cm behind a concave mirror with focal length 5.0 cm. Where is the
object?
a. 2.2 cm in front of the mirror
b. 20 cm behind the mirror
c. 9.0 cm in front of the mirror
d. 1.0 cm behind the mirror
Answer: a
9. Which one of the following is not an electromagnetic wave?
a. UV
b. gamma rays
c. radio waves
d. sound waves
Answer: d
HW 4, 5, 6 Questions With
Complete Solutions
1. A cube whose edges are 0.10 m long has one corner at the origin. A magnetic field
with a strength of 0.40 T is applied along the x-axis. What is the magnetic flux through
the shaded face of the cube? (See Figure 23-6 in original material)
a. 4.0×10−24.0×10−2 T⋅⋅m22
b. 0 T⋅⋅m22
c. 4.0×10−14.0×10−1 T⋅⋅m22
d. 4.0×10−34.0×10−3 T⋅⋅m22
Answer: b
, 2. A conducting loop in the form of a circle is placed perpendicular to a magnetic field
of 0.50 T. If the area of the loop increases at a rate of 3.0×10−33.0×10−3 m22/s, what
is the induced emf in the loop?
a. 5.5 mV
b. 1.7 mV
c. 4.3 mV
d. 1.5 mV
Answer: d
3. The inductance of a solenoid 16.0 cm long with a cross-sectional area
of 1.00×10−41.00×10−4 m22 is 1.00 mH. How many turns of wire does this solenoid
have?
a. 1130
b. 159,000
c. 318,000
d. 282
Answer: a
4. A car is approaching a radio station at a speed of 25.0 m/s. If the radio station
broadcasts at a frequency of 74.5 MHz, what change in frequency does the driver
observe?
a. 6.21 Hz
b. 67.0 Hz
, c. 98.3 Hz
d. 64.5 Hz
Answer: a
5. A 4.0 cm tall object is placed 60 cm away from a converging lens of focal length 30
cm. What is the nature and location of the image?
a. The image is real, 2.5 cm tall, 30 cm on the same side as object.
b. The image is real, 4.0 cm tall, 60 cm on the other side of the lens.
c. The image is virtual, 4.0 cm tall, 60 cm on the same side as object.
d. The image is virtual, 2.5 cm tall, 30 cm on the other side of the lens.
Answer: b
6. In a single-slit diffraction experiment, a beam of monochromatic light of wavelength
630 nm is incident on a slit of width 0.400 mm. If the distance between the slit and the
screen is 1.80 m, what are the positions of the first dark fringes?
a. 0.440×10−30.440×10−3 m
b. 0.870×10−30.870×10−3 m
c. 1.30×10−31.30×10−3 m
d. 2.84×10−32.84×10−3 m
Answer: d
, 7. A beam of light in water (n=1.33) enters a glass slab (n=1.50) at an angle of incidence
of 60.0°. What is the angle of refraction?
a. 39.8°
b. 60.0°
c. 90.0°
d. 50.2°
Answer: d
8. An image is 4.0 cm behind a concave mirror with focal length 5.0 cm. Where is the
object?
a. 2.2 cm in front of the mirror
b. 20 cm behind the mirror
c. 9.0 cm in front of the mirror
d. 1.0 cm behind the mirror
Answer: a
9. Which one of the following is not an electromagnetic wave?
a. UV
b. gamma rays
c. radio waves
d. sound waves
Answer: d
