PHYS 1260 Exam 4 Test Questions
and Answers (updated) – guaranteed
pass
The discrete radii and energy states of atoms were first explained by electrons circling
the atom in an integral number of
A) wave frequencies
B) de Broglie wavelengths
C) diffraction patterns
D) high-speed particles
E) none of these - CORRECT ANSWER - B) de Broglie wavelengths
Which radiation has no association with electric charge?
A) Alpha
B) Beta
C) Gamma
D) all of these
E) none of these - CORRECT ANSWER - C) Gamma
Alpha and beta particles are deflected by a magnetic field in
A) opposite directions
B) directions perpendicular to each other
C) the same direction - CORRECT ANSWER - A) opposite directions
For an isotope with a half-life of two days, at the end of four days the amount that
remains is
A) none
B) one-half
C) one-quarter
D) one-eighth
E) none of these - CORRECT ANSWER - C) one-quarter
, 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 - CORRECT ANSWER -
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] - CORRECT ANSWER - 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] - CORRECT ANSWER - 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] - CORRECT ANSWER - 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 - CORRECT ANSWER - 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
and Answers (updated) – guaranteed
pass
The discrete radii and energy states of atoms were first explained by electrons circling
the atom in an integral number of
A) wave frequencies
B) de Broglie wavelengths
C) diffraction patterns
D) high-speed particles
E) none of these - CORRECT ANSWER - B) de Broglie wavelengths
Which radiation has no association with electric charge?
A) Alpha
B) Beta
C) Gamma
D) all of these
E) none of these - CORRECT ANSWER - C) Gamma
Alpha and beta particles are deflected by a magnetic field in
A) opposite directions
B) directions perpendicular to each other
C) the same direction - CORRECT ANSWER - A) opposite directions
For an isotope with a half-life of two days, at the end of four days the amount that
remains is
A) none
B) one-half
C) one-quarter
D) one-eighth
E) none of these - CORRECT ANSWER - C) one-quarter
, 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 - CORRECT ANSWER -
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] - CORRECT ANSWER - 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] - CORRECT ANSWER - 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] - CORRECT ANSWER - 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 - CORRECT ANSWER - 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
