PHYS 1260 FINAL EXAM QUESTIONS WITH VERIFIED
ANSWERS
Two charges that are separated by one meter exert 1-N forces on each other. If the
magnitude of each charge is doubled, the force on each charge is - Answers - 4 N
Two charged particles attract each other with a force. If the charges of both particles are
doubled, and the distance between them is also doubled, then the force of attraction will
be - Answers - 1 F
Although the energy per coulomb of a high-voltage party balloon is high, the energy
transfer that occurs if you touch it is low due to - Answers - the relatively small amount
of charge
Assume that 10 J of work is required to push a charge (initially at rest) into an electric
field. If the charge is then released, it flies back to its starting position with a kinetic
energy of - Answers - 10 J
A coulomb of charge flowing in a bulb filament powered by a 6-volt battery is provided
with - Answers - 6 joules
Two light bulbs are connected to a battery, one at a time. The bulb that draws more
current has the - Answers - lower resistance, and is brightest.
When two lamps are connected in series to a battery, the electrical resistance that the
battery senses is - Answers - more than the resistance of either lamp
Compared to a single lamp connected to a battery, two identical lamps connected in
series to the same battery will carry - Answers - less current
An electron beam directed through a magnetic field - Answers - may be deflected &
experiences a force
Although a magnet can change the direction of travel of an electron beam, it cannot
change its - Answers - speed or kinetic energy
If you thrust a magnet into a closed loop of wire, the loop will - Answers - have a current
in it
When a magnet is moved to-and-fro in a wire coil, voltage is induced. If the coil has
twice as many loops, the voltage induced is - Answers - twice
, Which travels with the greatest speed in a vacuum? - Answers - Radio waves, Light
waves, X-rays, & Gamma rays have the same speed
What is the frequency of an electromagnetic wave that has a wavelength of 300,000
km? - Answers - 1 Hz
Refraction results from differences in light's - Answers - speed
In which material does light travel fastest? - Answers - air
The human eye has a cornea that takes an initial image of an object. How many times is
this image refined at the lens for final placement at the retina? - Answers - 2
A real image produced by the cornea is passed to the front of the lens in the form of a -
Answers - virtual object
When waves from a pair of closely-spaced slits arrive in phase - Answers - a bright
fringe is produced
Successive bright fringes in an interference pattern result from - Answers - distance
from the slits successively increasing one wavelength at a time
Monochromatic light is light of a single - Answers - wavelength, frequency, & color
According to the special theory of relativity, while traveling at very high speed your pulse
rate - Answers - remains unchanged
To outside observers at rest, the overall sizes of objects traveling at relativistic speeds
are - Answers - smaller
An astronaut traveling forward at 0.87c holds a meterstick in spear-like fashion. This
astronaut sees the spear's length as - Answers - 1 m
The finding that electrons in an atom occupy a volume much greater than the volume of
the nucleus is best explained by - Answers - the wave nature of the electron
A beam of electrons has - Answers - wave properties & particle properties
Discrete radii and energy states of atoms were first explained by electrons circling the
atom in an integral number of - Answers - de Broglie wavelengths
Rays with the shortest wavelengths have the - Answers - highest frequencies and
energies
ANSWERS
Two charges that are separated by one meter exert 1-N forces on each other. If the
magnitude of each charge is doubled, the force on each charge is - Answers - 4 N
Two charged particles attract each other with a force. If the charges of both particles are
doubled, and the distance between them is also doubled, then the force of attraction will
be - Answers - 1 F
Although the energy per coulomb of a high-voltage party balloon is high, the energy
transfer that occurs if you touch it is low due to - Answers - the relatively small amount
of charge
Assume that 10 J of work is required to push a charge (initially at rest) into an electric
field. If the charge is then released, it flies back to its starting position with a kinetic
energy of - Answers - 10 J
A coulomb of charge flowing in a bulb filament powered by a 6-volt battery is provided
with - Answers - 6 joules
Two light bulbs are connected to a battery, one at a time. The bulb that draws more
current has the - Answers - lower resistance, and is brightest.
When two lamps are connected in series to a battery, the electrical resistance that the
battery senses is - Answers - more than the resistance of either lamp
Compared to a single lamp connected to a battery, two identical lamps connected in
series to the same battery will carry - Answers - less current
An electron beam directed through a magnetic field - Answers - may be deflected &
experiences a force
Although a magnet can change the direction of travel of an electron beam, it cannot
change its - Answers - speed or kinetic energy
If you thrust a magnet into a closed loop of wire, the loop will - Answers - have a current
in it
When a magnet is moved to-and-fro in a wire coil, voltage is induced. If the coil has
twice as many loops, the voltage induced is - Answers - twice
, Which travels with the greatest speed in a vacuum? - Answers - Radio waves, Light
waves, X-rays, & Gamma rays have the same speed
What is the frequency of an electromagnetic wave that has a wavelength of 300,000
km? - Answers - 1 Hz
Refraction results from differences in light's - Answers - speed
In which material does light travel fastest? - Answers - air
The human eye has a cornea that takes an initial image of an object. How many times is
this image refined at the lens for final placement at the retina? - Answers - 2
A real image produced by the cornea is passed to the front of the lens in the form of a -
Answers - virtual object
When waves from a pair of closely-spaced slits arrive in phase - Answers - a bright
fringe is produced
Successive bright fringes in an interference pattern result from - Answers - distance
from the slits successively increasing one wavelength at a time
Monochromatic light is light of a single - Answers - wavelength, frequency, & color
According to the special theory of relativity, while traveling at very high speed your pulse
rate - Answers - remains unchanged
To outside observers at rest, the overall sizes of objects traveling at relativistic speeds
are - Answers - smaller
An astronaut traveling forward at 0.87c holds a meterstick in spear-like fashion. This
astronaut sees the spear's length as - Answers - 1 m
The finding that electrons in an atom occupy a volume much greater than the volume of
the nucleus is best explained by - Answers - the wave nature of the electron
A beam of electrons has - Answers - wave properties & particle properties
Discrete radii and energy states of atoms were first explained by electrons circling the
atom in an integral number of - Answers - de Broglie wavelengths
Rays with the shortest wavelengths have the - Answers - highest frequencies and
energies
