PHYSICS 1260 EXAM 4 QUESTIONS AND
ANSWERS GRADED A+ 2025/2026
The superposition of waves can produce; A) reinforcement. B) cancellation. C) partial
cancellation. D) all of these - ANS D) all of these
The superposition of identical waves affects
A) amplitude.
B) wavelength.
C) speed.
D) [all of these]
E) [none of these] - ANS A) amplitude
The wave-particle duality applies to A) photons. B) electrons. C) protons. D) [all of these] E)
[none of these] - ANS D) all of these
After passing through double slits, electrons make a pattern on a screen that
A) shows which slit each electron has passed through.
B) resembles a pattern that waves make.
C) has two peaks of intensity.
D) has a single wide peak of intensity. - ANS B) resembles a pattern that waves make
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, You and a friend can share the same space and time measurements when A) you are side-by-
side at rest. B) you both are side-by-side moving at constant velocity. C) [either of these] D)
[none of these] - ANS C) [either of these]
Objects moving at relativistic speeds appear to observers at rest to be A) stretched. B)
contracted. C) either, depending on direction of motion. D) [none of these] - ANS B)
contracted.
To outside observers at rest, the overall sizes of objects traveling at relativistic speeds are
A) larger.
B) smaller.
C) the same size. - ANS B) smaller.
According to the well-known equation E = mc2,
A) mass and energy travel at the speed of light squared.
B) energy is actually mass traveling at the speed of light squared.
C) mass and energy travel at twice the speed of light.
D) mass and energy are related.
E) [none of these] - ANS D) mass and energy are related
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] - ANS C) [both of these]
Heisenberg's uncertainty principle is A) noticeable only for submicroscopic particles. B) a
fundamental principle in quantum mechanics. C) predominant in the atomic domain. D) [all of
these] E) [none of these] - ANS D) [all of these]
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ANSWERS GRADED A+ 2025/2026
The superposition of waves can produce; A) reinforcement. B) cancellation. C) partial
cancellation. D) all of these - ANS D) all of these
The superposition of identical waves affects
A) amplitude.
B) wavelength.
C) speed.
D) [all of these]
E) [none of these] - ANS A) amplitude
The wave-particle duality applies to A) photons. B) electrons. C) protons. D) [all of these] E)
[none of these] - ANS D) all of these
After passing through double slits, electrons make a pattern on a screen that
A) shows which slit each electron has passed through.
B) resembles a pattern that waves make.
C) has two peaks of intensity.
D) has a single wide peak of intensity. - ANS B) resembles a pattern that waves make
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, You and a friend can share the same space and time measurements when A) you are side-by-
side at rest. B) you both are side-by-side moving at constant velocity. C) [either of these] D)
[none of these] - ANS C) [either of these]
Objects moving at relativistic speeds appear to observers at rest to be A) stretched. B)
contracted. C) either, depending on direction of motion. D) [none of these] - ANS B)
contracted.
To outside observers at rest, the overall sizes of objects traveling at relativistic speeds are
A) larger.
B) smaller.
C) the same size. - ANS B) smaller.
According to the well-known equation E = mc2,
A) mass and energy travel at the speed of light squared.
B) energy is actually mass traveling at the speed of light squared.
C) mass and energy travel at twice the speed of light.
D) mass and energy are related.
E) [none of these] - ANS D) mass and energy are related
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] - ANS C) [both of these]
Heisenberg's uncertainty principle is A) noticeable only for submicroscopic particles. B) a
fundamental principle in quantum mechanics. C) predominant in the atomic domain. D) [all of
these] E) [none of these] - ANS D) [all of these]
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
