PHYS 1260 EXAM 4 TEST QUESTIONS WITH VERIFIED
ANSWERS
Light from two closely spaced stars cannot produce a steady interference pattern due to
A) incoherence
B) the inherent instability of the atmosphere
C) their different radial distances
D) their non-point like nature
E) closely spaced stars not producing interference patterns - Answers - A) incoherence
In the double slit experiment, fringes are more widely spaced when illumination is with
monochromatic (single color)
A) longer wavelength light
B) shorter wavelength light
C) polarized light
D) [none of these] - Answers - A) longer wavelength light
When waves from a pair of closely spaced slits arrive in phase
A) a bright fringe is produced
B) a dark fringe is produced
C) both bright and dark fringes are produced
D) [none of these] - Answers - A) a bright fringe is produced
Interference colors in a soap bubble is evidence that the soap film
A) has two reflecting surfaces
B) is thin
C) [both of these]
D) [neither of these] - Answers - C) [both of these]
According to the special theory of relativity, while traveling at very high speed your pulse
rate
A) increases
B) decreases
C) remains unchanged - Answers - C) remains unchanged
A spaceship whizzes past a planet at high speed. An observer on the planet sees a
contracted spaceship, while an observer on the spaceship sees
A) a contracted planet
B) an expanded planet
C) a normal planet
D) a contracted or expanded planet depending on the direction of travel - Answers - A)
a contracted planet
, According to Einstein's theory of special relativity
A) space and time are aspects of each other
B) energy and mass are aspects of each other
C) [both of these]
D) [neither of these] - Answers - C) [both of these]
Comparing the light from a glowing tube of neon gas and the beam of a helium-neon
laser, there is a greater number of spectral lines in light from the
A) neon gas tube
B) laser beam
C) [both about the same] - Answers - A) neon gas tube
According to Louis de Broglie, a material particle has
A) particle properties
B) wave properties
C) [both of these]
D) [neither of these] - Answers - C) [both of these]
The more we know about a particle's position, the less we know about its
A) speed
B) momentum
C) kinetic energy
D) [all of these]
E) [none of these] - Answers - D) [all of these]
When an electron de-excites from the third quantum level to the second, and then to the
ground state, two photons are emitted. The sum of the emitted frequencies equals the
frequency of the single photon that would be emitted if de-excitation were from the third
to
A) the second level
B) the ground state
C) any other level
D) [none of these] - Answers - B) the ground state
Electric forces within an atomic nucleus tend to
A) hold it together
B) push it apart
C) neither of these - Answers - B) push it apart
Which is the strongest fundamental force?
A) gravitational
B) electromagnetic
C) strong nuclear
D) weak nuclear
E) [none of these] - Answers - C) strong nuclear
ANSWERS
Light from two closely spaced stars cannot produce a steady interference pattern due to
A) incoherence
B) the inherent instability of the atmosphere
C) their different radial distances
D) their non-point like nature
E) closely spaced stars not producing interference patterns - Answers - A) incoherence
In the double slit experiment, fringes are more widely spaced when illumination is with
monochromatic (single color)
A) longer wavelength light
B) shorter wavelength light
C) polarized light
D) [none of these] - Answers - A) longer wavelength light
When waves from a pair of closely spaced slits arrive in phase
A) a bright fringe is produced
B) a dark fringe is produced
C) both bright and dark fringes are produced
D) [none of these] - Answers - A) a bright fringe is produced
Interference colors in a soap bubble is evidence that the soap film
A) has two reflecting surfaces
B) is thin
C) [both of these]
D) [neither of these] - Answers - C) [both of these]
According to the special theory of relativity, while traveling at very high speed your pulse
rate
A) increases
B) decreases
C) remains unchanged - Answers - C) remains unchanged
A spaceship whizzes past a planet at high speed. An observer on the planet sees a
contracted spaceship, while an observer on the spaceship sees
A) a contracted planet
B) an expanded planet
C) a normal planet
D) a contracted or expanded planet depending on the direction of travel - Answers - A)
a contracted planet
, According to Einstein's theory of special relativity
A) space and time are aspects of each other
B) energy and mass are aspects of each other
C) [both of these]
D) [neither of these] - Answers - C) [both of these]
Comparing the light from a glowing tube of neon gas and the beam of a helium-neon
laser, there is a greater number of spectral lines in light from the
A) neon gas tube
B) laser beam
C) [both about the same] - Answers - A) neon gas tube
According to Louis de Broglie, a material particle has
A) particle properties
B) wave properties
C) [both of these]
D) [neither of these] - Answers - C) [both of these]
The more we know about a particle's position, the less we know about its
A) speed
B) momentum
C) kinetic energy
D) [all of these]
E) [none of these] - Answers - D) [all of these]
When an electron de-excites from the third quantum level to the second, and then to the
ground state, two photons are emitted. The sum of the emitted frequencies equals the
frequency of the single photon that would be emitted if de-excitation were from the third
to
A) the second level
B) the ground state
C) any other level
D) [none of these] - Answers - B) the ground state
Electric forces within an atomic nucleus tend to
A) hold it together
B) push it apart
C) neither of these - Answers - B) push it apart
Which is the strongest fundamental force?
A) gravitational
B) electromagnetic
C) strong nuclear
D) weak nuclear
E) [none of these] - Answers - C) strong nuclear
