Physics Final Concept
Beam of positively charged particles A. Alpha particles B. Beta particles C. Gamma particles
A. Alpha particles
You want to create a spotlight that will shine a bright beam of light with all light rays parallel to each other. You have a large concave mirror and a small light bulb. Where should you place the lightbulb? A. At the focal point B. At the center of curvature of the mirror C. At any point, since all rays bouncing off the mirror will be parallel D. None of the above, one cannot make parallel rays with a concave mirror
A. At the focal point
When on rubs a plastic rod with a piece of cloth, the rod becomes negatively charged. This is because A. Electrons are transferred from cloth to rod B. Protons are transferred from cloth to rod C. Electrons are created on the rod by the rubbing process (And no particles are exchanged between cloth and rod)
A. Electrons are transferred from cloth to rod
In empty space, which quantity is always larger for X-rays than for a radio wave A. Frequency B. Wavelength C. Speed D. Frequency and speed E. None of the above
A. Frequency
The primary reason that very larger nuclei are unstable is due to A. The cumulative repulsive force of the protons B. The cumulative attractive force between the protons and the orbiting electrons C. The repulsive force between the neutrons and the protons D. The extreme weakness of the gravitational attraction of the protons
A. The cumulative repulsive force of the protons
Elements of the Periodic table are distinguished by A. Number of protons in the nucleus B. Number of neutrons in the nucleus C. Number of electrons in the nucleus D. Both A and B E. A, B, and C
A. number of protons in the nucleus
Beam of negatively charged particles A. Alpha particles B. Beta particles C. Gamma particles
B. Beta particles
The main fuel for producing energy in the center of the sun is A. Helium B. Hydrogen C. Uranium D. Any radioactive material E. Oxygen
B. Hydrogen
A nucleus has A. More energy than its component neutrons and protons B. Less energy that its component neutrons and protons C. The same energy as its component neutrons and protons D. More energy than its component neutrons and protons have when the nucleus is at rest but less energy than when it is moving
B. Less energy than its component neutrons and protons
Isotopes contain A. Same number of proton and neutrons B. Same number of protons but different number of neutrons C. Different number of protons and different number of neutrons
B. Same number of protons but different number of neutrons
When a circuit breaker opens because you plug too many devices into a single circuit, this indicates that A. The voltage has become too high B. The current has become too high C. The resistance has become too high D. None of the above
B. The current has become too high
For a beam of light, the direction of polarization is defined as A. The beam's direction of travel B. The direction of the electric field's vibration C. The direction of the magnetic field's vibration D. The direction that is perpendicular to both the electric and magnetic fields
B. The direction of the electric field's vibration
Suppose you are looking along a line through the centers of two circular (but separate) wire loops, one behind the other. A battery is suddenly connected to the loop closer to you, establishing a clockwise current. What happens in the second loop? A. A counter-clockwise current is induced that flows as long as current flows in the first loop B. A clockwise current is induce that flows as long as current flows in the first loop C. A counter-clockwise current is induced that flows only as long as the current in the first loop is building up from zero to its final value D. A clockwise current is induce that flows only as long as the current in the first loop is building up from zero to its final value
C. A counter-clockwise current is induced that flows only as long as the current in the first loop is building up from zero to its final value
Which of the following is NOT a manifestation of the wave-light nature of light? A. Interference B. Diffraction patterns C. Compton scattering D. Results of Young's double slit experiment E. These are all due to the wave nature of light
C. Compton scattering
Neutral beam A. Alpha particles B. Beta particles C. Gamma particles
C. Gamma particles
Which of the following statements about predictions of Maxwell's equations is NOT correct? A. Changing E fields induce B fields B. Changing B fields induce E fields C. Light cannot travel in a vacuum D. The speed of light in vacuum is independent of wavelength E. The speed of light in vacuum is independent of wave frequency
C. Light cannot travel in a vacuum
If someone is around a corner from you, what is the main reason you can hear her speaking but cannot see her? A. Sound travels farther in air than light does B. Sound waves reflect off walls, but light cannot C. Sound waves have long enough wavelengths to bend around a corner, whereas light wavelengths are too short to bend much D. None of the above
C. Sound waves have long enough wavelengths to bend around a corner, whereas light wavelengths are too short to bend much
If ammeters and voltmeters are no to significantly alter the quantities they are measuring, A. The resistance of an ammeter and a voltmeter should be much higher than that of the circuit element being measured B. The resistance of an ammeter and a voltmeter should be much lower than that of the circuit element being measured C. The resistance of an ammeter should be much lower and that of a voltmeter much higher than that of the circuit element being measured D. The resistance of an ammeter should be much higher and that of a voltmeter much lower than that of the circuit element being measured
C. The resistance of an ammeter should be much lower and that of a voltmeter much higher than that of the circuit element being measured
When the reflection of an object is seen in a flat mirror, the image is A. Real and upright B. Real and inverted C. Virtual and upright D. Virtual and inverted
C. Virtual and upright
Which of the following can a transformer accomplish? A. Changing voltage but not current B. Changing current but not voltage C. Changing power D. Changing both voltage and current
D. Changing both voltage and current
A positive charge Q1 and a negative charge Q2 = -[Q2] are placed a distance d apart. Is there a point between the two charges where the E-field vanishes? Is there a point between the two charges where the potential vanishes? A. Yes, yes B. No, no C. Yes, no D. No, Yes
D. No, yes
An electron finds itself in the E-field created by a positive point charge. Which of the following is true? A. The field points toward the positive charge and the force on the electron is in the same direction as the field B. The field points towards the positive charge and the force on the electron is in the opposite direction to the field C. The field points away from the positive charge and the force on the electron is in the same direction as the field D. The field points away from the positive charge and the force on the electron is in the opposite direction to the field
D. The field points away from the positive charge and the force on the electron is in the opposite direction
A really high-speed train moves in a direction parallel to its length with a speed that approaches the speed of light. The height of the train, as measured by a stationary observer on the ground A. Approaches infinity B. Approaches zero C. Increases slightly D. Decreases slightly E. Does not change due to the motion
E. Does not change due to the motion
Electrons carry energy from battery to a lightbulb. What happens to the electrons when they reach the lightbulb? A. The electrons are used up B. The electrons stay in the lightbulb C. The electrons are emitted as light D. Fewer electrons leave the lightbulb than enter it E. None of the above
E. None of the above
Total binding energy - Amount of energy that must be put into a nucleus in order to break it apart into its constituents. True or false
True
