Physics Concept Questions (Test #5.33)

This is an introductory Physics test.
The test contains 30 multiple choice questions.
Give yourself up to 45 minutes to complete the test.

Double the amplitude of a wave and you necessarily change its
1. wavelength
2. frequency
3. speed
4. color
5. taste
6. none of the above
7. all of the above
Charge carriers in a metal are not protons because protons are
1. neutral
2. positively charged
3. negatively charged
4. introverts
5. not very socially inclined
6. tightly bound
Connect three light-bulbs in parallel with a battery and you draw a certain amount of current. Connect the three light-bulbs in series with the same battery and you draw ____ current.
1. the same
2. more
3. less
4. zero
5. infinite
6. none of the above
7. all of the above
A steady magnetic field runs from top to bottom of this page. An electron is moving from bottom to top of this page. The force on the electron, exerted by the magnetic field, is
1. in the same direction as the electron's motion
2. in the opposite direction as the electron's motion
3. from left to right on this page
4. from right to left on this page
5. perpendicular to the plan of this page
6. zero
7. infinite
8. none of the above
A proton vibrates from side-to-side 10 times a second. It generates an electromagnetic field with a frequency of
1. 1 Hz
2. 2 Hz
3. 10 Hz
4. 100 Hz
5. 10 meters
6. 100 meters
7. 10 meters/second
8. 100 meters/second
To most efficiently absorb an electromagnetic wave, the frequency of the wave should be ___ the natural frequency of the material being used to absorb the wave.
1. greater than
2. less than
3. equal to
4. zero compared to
5. infinite compared to
6. none of the above
7. all of the above
When electron clouds in a material are made to oscillate ____ waves are necessarily emitted
1. electronic
2. magnetic
3. de Broglie
4. electromagnetic
5. sound
6. ocean
7. ultraviolet
A surface that appears smooth to one kind of waves can appear rough to another kind of waves whose wavelength is ____ compared to the first kind.
1. zero
2. infinite
3. smaller
4. larger
5. the same
6. all of the above
7. none of the above
The bottom of a swimming pool appears closer to the surface than it actually is. This is caused by ___ of light.
1. refraction
2. fraction
3. reflection
4. flection
5. absorption
6. sorption
7. denaturization
About 9 AM, in the morning, a beam of sunlight enters the water of your swimming pool. The beam necessarily bends ___ as it enters the water.
1. by zero degrees
2. by 180 degrees
3. by 90 degrees
4. towards the normal
5. away from the normal
6. none of the above
7. all of the above
Can longitudinal waves experience polarization?
1. No
2. yes
3. sometimes
4. Depends on the speed of the wave
5. depends on the frequency of the wave
6. depends on the amplitude of the wave
7. none of the above
8. all of the above
When the axes of two polaroid filters are perpendicular to each other ___ of the incoming light can pass through the combined filters
1. all
2. none
3. half
4. red frequencies
5. blue frequencies
6. white frequencies
7. slower photons
8. faster photons
An example of interefernce is
1. a mirage
2. light bending when it enters water
3. light bending when it exits water
4. red sunset
5. orange harvest moon
6. rainbow in the sky
7. rainbow colors in gasoline on water
If destructive interference eliminates red from white light, what color is the remaining light likely to be ?
1. red
2. brown
3. black
4. white
5. cyan
6. purple
7. yellow
Laser light is
1. incoherent
2. coherent
3. polychromatic
4. inchromatic
5. out of phase
6. sometimes in phase, sometimes out of phase
7. always red
An non-excited atom absorbs a single red photon, and then emits another photon. The emitted photon can be
1. blue
2. ultraviolet
3. violet
4. green
5. white
6. infrared
A material is heated so it is "red-hot". The atoms in the material are
1. not vibrating
2. vibrating at an infinite range of frequencies
3. vibrating at about the same frequency
4. oscillating in figures of eight
5. oscillating in circles
6. oscillating in squares
What is the primary source of the electromagnetic radiation that is continually emitted by your body?
1. your magnetic personality
2. your charm bracelet
3. radioactive atoms in your bones
4. your body temperature vibrates your atoms
5. your body clock
6. your most recent meal
Which of the following entities is most prone to being impacted by quantum effects
1. a whale
2. a horse
3. a meteor
4. a meteorite
5. an egg
6. an electron
7. a baseball
An ultraviolet laser beam and an infrared laser beam have the same number of photons. Which beam has the lower energy?
1. ultraviolet
2. infrared
3. both have the same energy
4. neither has any energy
5. depends on the speed of the ultraviolet light
6. depends on the frequency of the infrared light
7. all of the above
A photon's energy is given by its frequency multipled by ___ constant
1. Henry's
2. Jame's
3. Newton's
4. Einstein's
5. Planck's
6. phonton's
7. energy
The following entites are all moving at the same speed. Based on quantum physics, which of these entities has the shortest wavelength?
1. an elephant
2. a space-ship
3. an astronaut
4. a mouse
5. an insect
6. the earth
7. an electron
8. a proton
In the Bohr model, electrons can orbit the nucleus of an atom in a set of discrete rings. The perimeter of each ring corresponds to an integral number of ___ of the electron.
1. de Broglie spins
2. de Broglie rotations
3. de Broglie frequencies
4. de Broglie wavelengths
5. de Broglie flavors
6. de Broglie amplitudes
Alpha particles contain
1. protons
2. electrons
3. neutrons
4. alphons
5. particlons
6. positrons
7. gamma rays
The Bohr model of the atom has ___ circling the atomic nucleus.
1. protons
2. electrons
3. neutrons
4. alphons
5. particlons
6. positrons
7. gamma rays
Your hand and your table are both mostly empty space. Despite this, your hand does not pass through the table because
1. Your hand does not realize that it is mostly empty space
2. Your table does not realize that it is mostly empty space
3. Your table is not mostly empty space
4. Your hand is not mostly empty space
5. magnetic fields keep your hand from passing through the table
6. electric fields keep your hand from passing through the table
7. gravitational fields keep your hand from passing through the table
We encounter radioactivity during the course of our lives. Most of this exposure comes from
1. radios
2. TV
3. nuclear power plants
4. nuclear weapons testing
5. space ships
6. aliens
7. natural environment
8. medical and dental X-rays
An alpha particle is absorbed by an atomic nucleus. If nothing else happens what changes in the nucleus.
1. the number of protons is reduced
2. the number of electrons is reduced
3. the number of neutrons is reduced
4. the number of protons is increased
5. the number of electrons is increased
6. the number of neutrons is increased
What happens if a Lithium atom emits an alpha particle? It becomes
1. a lithium isotope
2. a lithium ion
3. helium
4. hydrogen
5. beryllium
6. boron
7. oxygen
A 12,000 year-old sample of old carbon is 1/4 as radioactive as a current sample of carbon. Based on this value, what is the approximate half-life of Carbon 14.
1. 12,000 years
2. 12,000 days
3. 6,000 years
4. 6,000 days
5. 3,000 years
6. 3,000 days
7. 24,000 years
8. 48,000 years

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