Quantum Mechanics Exam 1 with
complete solutions 2024/2025
1.1 The major steps that led to the birth of modern physics include ____ of the
1890s, ____ and ____, the ____ theory of matter, and ____ of 1895.
a. classical physics; waves; particles; atomic; unresolved questions
b. quantum physics; uncertainty principle; particles; atomic; unknown
questions
c. relativistic physics; waves; uncertainty principle; atomic; unresolved
questions
d. classical physics; waves; particles; complementary; known questions
e. none of the above
(a) The major steps that led to the birth of modern physics include classical
physics of the 1890s, waves and particles, the Atomic theory of matter, and
unresolved questions of 1895.
1.2. Mechanics, electromagnetism and thermodynamics all include ____ laws.
a. complementary
b. uncertainty
c. conservation
d. non-conservation
e. none of the above
(a) Mechanics, electromagnetism and thermodynamics all include complementary
laws.
1.3. The law of conservation of ____ states that the total sum of ____ in all its
forms is ____ in ____ interactions.
,a. momentum; momentum; conserved
b. energy; energy; conserved; some
c. energy; energy; not conserved; all
d. energy; energy; conserved; all
e. none of the above
(d)The law of conservation of energy states that the total sum of energy in all its
forms is conserved in all interactions
1.4. The law of conservation of ____ states that in the absence of net ____, ____ is
conserved in all of its interactions.
a. angular momentum; external forces; linear momentum
b. linear momentum; internal torque; angular momentum
c. angular momentum; internal forces; angular momentum
d. angular momentum; external torque; angular momentum
e. none of the above
(d) The law of conservation of angular momentum states that in the absence of
net external torque, angular momentum is conserved in all of its interactions.
1.5. Energy can be transported by ____ or ____.
a. particles; wave equations
b. particles; waves
c. particle equations; waves
d. particle complementarity; wave uncertainty
e. none of the above
(b) Energy can be transported by particles or waves.
1.6. Particles transfer energy via ____ interactions.
a. relativistic
b. quantum mechanical
c. point mass
d. wave mass
e. none of the above
(c) Particles transfer energy via point mass interactions.
1.7. Particles interact in the form of ____.
a. wave equations
b. wave masses
c. point masses
d. point equations
e. none of the above
(c) Particles interact in the form of point masses.
, 1.8. Energy transfer at localized points in space are characteristic of ____.
a. particles
b. waves
c. both waves and particles
d. neither waves nor particles
e. none of the above
(a) Energy transfer at localized points in space are characteristic of particles.
1.9. In diffraction, light waves can ____ around ____ and ____.
a. reflect; slits; windows
b. bend; corners; edges
c. refract; slits; windows
d. reflect; corners; edges
e. none of the above
(b) In diffraction, light waves can bend around corners and edges.
1.10. In the particle theory of light travels in ____.
a. spirals
b. straight lines
c. elliptical orbits
d. curved lines
e. none of the above
(b) In the particle theory of light travels in straight lines.
1.11. Newton promoted the ____ theory of light.
a. particle
b. wave
c. complementarity
d. statistical
e. none of the above
(a) Newton promoted the particle theory of light.
1.12. In the wave theory of light, light propagates as a ____ of ____ from the point
of origin.
a. ray; straight lines
b. wave; straight lines
c. wave; concentric circles
d. ray; concentric spirals
e. none of the above
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