Electrostatics
Circuits
Magnetism
Waves
Light
Optics
100
If the magnitude of the charge on each of two positively charged objects is halved, what happens to the magnitude of the electrostatic force on the objects?
A) It decreases to one-sixteenth of its original value.
B) It decreases to one-quarter of its original value.
C) It remains the same as its original value.
D) It decreases to one-half of its original value.
B) It decreases to one-quarter of its original value.
100
A 1.1 kW-hr dryer is used for .5 hours every day. What would Georgia Power charge for 30 days if their going rate is 11 cents/kW-hr ?
A) $1.82
B) $12.80
C) $108.90
D) $1815.00
A) $1.82
100
Which would increase the strength of an electromagnet?
A) increase the current through the wire
B) increase the number of coils of wire
C) add a ferromagnetic core
D) all of the above
D) all of the above
100
Students in a Physics classroom are asked to explain the relationship between frequency-wavelength and frequency-pitch as they listen to a chirping bird.
Which of the following statements correctly describes the properties of sound waves?
A) Frequency and wavelength are directly proportional, and pitch is the perception of frequency.
B) Frequency and wavelength are inversely proportional, and pitch is the perception of frequency.
C) Frequency and pitch are directly proportional, and wavelength is the perception of pitch.
D) Frequency and pitch are inversely proportional, and wavelength is the perception of pitch.
B) Frequency and wavelength are inversely proportional, and pitch is the perception of frequency.
100
Which TWO phenomenon BEST describes the reason for the dark and light bands that appear on the optical screen during the double slit experiment seen?
A) Reflection
B) Refraction
C) Diffraction
D) Polarization
E) Interference
C and E - Diffraction and Interference
100
What is Mr. Crawford's brother's name?
A) Tanner
B) Richard
C) William
D) Adrian
C) William
200
The diagram shows two similar metal spheres and their charges. Each sphere's mass is equal to it's charge.
Which TWO statements correctly compare the electrostatic force and gravitation force acting on Sphere A?
A) The forces are equal and opposite in magnitude.
B) The gravitational force is stronger than the electrostatic force.
C) The electrostatic force is stronger than the gravitational force.
D) The forces point in the same direction.
E) The forces point in opposite directions.
C and E
200
Which of the following would always increase the flow of current through the lights in a circuit?
A) Decreasing the battery voltage and decreasing the resistance of the lights.
B) Increasing the battery voltage and increasing the resistance of the lights.
C) Decreasing the battery voltage and increasing the resistance of the lights.
D) Increasing the battery voltage and decreasing the resistance of the lights.
D) Increasing the battery voltage and decreasing the resistance of the lights.
200
A magnetic compass is placed near a copper wire. When the wire is connected into a battery, the compass needle changes position.
Which of the following is the BEST explanation for the movement of the compass needle?
A) The copper wire magnetizes the needle to create a force.
B) The needle magnetizes the copper wire to create a force.
C) The current in the wire produces a magnetic field and exerts a force on the needle.
D) The compass needle moves due to Earth’s magnetic field and is unaffected by the electromagnet.
C) The current in the wire produces a magnetic field and exerts a force on the needle.
200
The following figure shows a graph of the displacement over time of a particle of a uniform medium as a wave passes through the medium.
What is the period of the wave?
A) 0.2 s
B) 50 s
C) 100 s
D) 200 s
B) 50 s
200
A physics class is investigating the properties of light using polarizing filters. The students change the orientation of the two filters to see how much light is able to travel through both filters.
To completely block the light, which orientation should the students use for the two filters?
A) Filter A should be vertical and Filter B should be vertical.
B) Filter A should be vertical and Filter B should be horizontal.
C) Filter A should be vertical and Filter B should be at a 60 degree angle.
D) Filter A should be vertical and Filter B should be at a 45 degree angle.
B) Filter A should be vertical and Filter B should be horizontal.
200
The diagram depicts a converging lens of focal length F and an object placed between 1 and 2 focal lengths from the lens.
The image of the object produced by the lens is best described as
A) virtual and inverted.
B) virtual and upright.
C) real and upright.
D) real and inverted.
D) real and inverted.
300
The diagram below represents two charges, q1 and q2, separated by distance d.
Which change would cause the electric force between the two charges to remain the same?
A) doubling q1 only
B) doubling d, q1, and q2
C) doubling d and q1 only
D) doubling d only
B) doubling d, q1, and q2
300
As the number of resistors in a parallel circuit is increased, what happens to the equivalent resistance of the circuit and total current in the circuit?
A) Both the equivalent resistance and total current increase.
B) The equivalent resistance decreases, and the total current increases.
C) The equivalent resistance increases, and the total current decreases.
D) Both the equivalent resistance and total current decrease.
B) The equivalent resistance decreases, and the total current increases.
300
A group of students is given a loop of wire connected to a light bulb and a bar magnet. They are asked to make the light bulb light up.
Which of the following would cause the light bulb to glow?
A) Placing the magnet beside the light bulb.
B) Placing the magnet inside the loop of wire.
C) Moving the magnet beside the light bulb.
D) Moving the magnet through the loop of wire.
D) Moving the magnet through the loop of wire.
300
Which of the following images show a note at the highest pitch?
A
B
C
D
C
300
Suppose a light ray shines through a substance with a high refraction value into a substance with a lower refraction value. What will happen?
A) It travels parallel to the normal.
B) It bends away from the normal.
C) It does not bend in any direction.
D) It bends toward the normal.
B) It bends away from the normal.
300
What will happen to this ray of light when it hits this convex lens?
A) It will refract parallel to the principal axis.
B) It will reflect toward the center of curvature of the lens.
C) It will reflect toward the focal point on the same side of the lens as the object.
D) It will refract toward the focal point on the side of the lens opposite the object.
D) It will refract toward the focal point on the side of the lens opposite the object.
400
Two balloons of opposite charge were held in place as shown in Figure X. When released, they attracted each other and came to rest as shown in Figure Y.
Which statement is MOST accurate?
A) The magnitude of the electrical force increased and the electrical potential energy decreased.
B) The magnitude of the electrical force decreased and the electrical potential energy decreased.
C) The magnitude of the electrical force increased and the electrical potential energy increased.
D) The magnitude of the electrical force decreased and the electrical potential energy increased.
A) The magnitude of the electrical force increased and the electrical potential energy decreased.
400
Which of the following answer choices BEST describes the voltage and current flowing through the resistors in Circuit A and Circuit B?
A) In Circuit A, the voltage across all three resistors is the same, but the current is different.
B) In Circuit B, the voltage across all three resistors is the same, but the current is different.
C) In Circuit A, both the voltage and current across all three resistors are the same.
D) In Circuit B, both the voltage and current across all three resistors are the same.
B) In Circuit B, the voltage across all three resistors is the same, but the current is different.
400
The student came up with a model that shows a loop of wire being rotated by some external force between two strong, permanent magnets. This causes the charges in the loop to flow.
What did the student make a model of?
A) a motor
B) a generator
C) both a motor and a generator
D) neither a motor nor a generator
B) a generator
400
A trumpet creates a sound wave that has a wave speed of 360 m/s and a wavelength of 0.8 m. What is the frequency of the sound wave?
A) 280.0 Hz, because frequency is equal to wave speed multiplied by wavelength.
B) 0.002 Hz, because frequency is equal to wavelength subtracted from wave speed.
C) 450.0 Hz, because frequency is equal to wave speed divided by wavelength.
D) 70.0 Hz, because frequency is equal to wavelength multiplied by wave speed.
C) 450.0 Hz, because frequency is equal to wave speed divided by wavelength.
400
What is the speed of an electromagnetic wave moving through a medium with an index of refraction of 1.27?
2.36 *10^8 m/s
400
What does this graph describe about the relationship between image size and image distance for real images formed by a converging lens?
A) As the image distance increases, image size increases.
B) As image distance increases, image size decreases.
C) There is no correlation between image distance and image size.
D) As image distance decreases, image size increases.
D) As image distance decreases, image size increases.
500
Two spheres have a charge of +2.0 C and -2.0 C. Which graph best shows the magnitude of the electrostatic force as a function of the distance between the spheres?
500
For a resistor that obeys Ohm's Law, which of the following graphs best represents the relationship between the current and resistance?
500
A magnetic compass is placed near a copper wire with current running through it, as shown below.
If the terminals of the battery were reversed, what would happen to the compass needle?
A) It would move less because the current will weaken when the terminals are flipped.
B) It would move more because the current is strengthened when the terminals are flipped.
C) It would point the opposite direction because the current will change direction.
D) It will point the same direction because the magnetic field does not depend on the direction of current.
C) It would point the opposite direction because the current will change direction.
500
The students at a concert notice a balloon near the large speakers moving slightly towards, then away from the speaker during the low-frequency sounds. The students then explain this phenomenon.
What type of wave is being observed and how do you know?
Longitudinal wave, because the medium is moving in the same direction as the wave.
500
In a room painted entirely black, the only illumination comes from three lights shining down on a pure white ceramic tile. The lights produce pure red, blue and green colors on the surface, and are arranged so the light beams overlap as shown.
When you look through a perfect red filter, you see the circular area in the middle of the overlapping pattern.
What color would each of the labeled regions appear?
W - Cyan
Z - Green
X - Cyan
Y - Green
500
This object is located 13.0 cm to the left of the lens and the image forms at 20.8 cm to the right of the lens.
What is the focal length of the lens?
A) 0.125 cm
B) 8.0 cm
C) 16.9 cm
D) 33.8 cm
B) 8.0 cm