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Modern Physics with Specialized Online Physics Exams
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Which of the following describes a quantum system’s ‘ground state’?
A. The lowest energy state of the system
B. The highest energy state of the system
C. An excited state of the system
D. A state with zero energy
Answer: The lowest energy state of the system
The ‘De Broglie Hypothesis’ states that:
A. Every moving particle or object has an associated wave
B. Photons have no mass
C. Electrons orbit the nucleus in fixed paths
D. Atoms emit radiation in discrete quanta
Answer: Every moving particle or object has an associated wave
The ‘Stern-Gerlach Experiment’ demonstrated the quantization of:
A. Angular momentum
B. Energy levels
C. Photon wavelength
D. Electric charge
Answer: Angular momentum
The ‘Heisenberg Uncertainty Principle’ is fundamental in determining the:
A. Limits of precision in measuring physical properties
B. Exact path of a particle
C. Speed of light
D. Energy of a particle
Answer: Limits of precision in measuring physical properties
The ‘Dirac Sea’ concept is associated with:
A. The existence of negative energy states
B. Quantum tunneling
C. Wave-particle duality
D. Photon energy
Answer: The existence of negative energy states
In Quantum Mechanics, the ‘Probability Density Function’ describes:
A. The likelihood of finding a particle in a particular region of space
B. The exact position of a particle
C. The energy of a particle
D. The speed of a particle
Answer: The likelihood of finding a particle in a particular region of space
The ‘Einstein’s Theory of General Relativity’ addresses:
A. The curvature of spacetime caused by gravity
B. Quantum superposition
C. Particle-wave duality
D. Electromagnetic interactions
Answer: The curvature of spacetime caused by gravity
The ‘Pauli Exclusion Principle’ applies to which type of quantum particles?
A. Fermions
B. Bosons
C. Photons
D. All of the above
Answer: Fermions
The ‘Bohr Radius’ defines the distance between the electron and nucleus in which model?
A. Bohr Model of the Atom
B. Thomson Model of the Atom
C. Rutherford Model of the Atom
D. Quantum Mechanical Model of the Atom
Answer: Bohr Model of the Atom