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Which of the following describes a quantum system in a superposition of states?
A. The system can be in multiple states at once
B. The system can only be in one state
C. The system is always in the lowest energy state
D. The system's state is deterministic
Answer: The system can be in multiple states at once
Subjects: Modern Physics, Physics
Which experiment demonstrated that electrons exhibit wave properties?
A. Davisson-Germer Experiment
B. Young's Double-Slit Experiment
C. Stern-Gerlach Experiment
D. Millikan's Oil Drop Experiment
Answer: Davisson-Germer Experiment
Subjects: Modern Physics, Physics
The Heisenberg Uncertainty Principle states that:
A. The more precisely the position is known, the less precisely the momentum can be known
B. Energy and time can be measured precisely simultaneously
C. The charge of an electron cannot be measured exactly
D. Position and energy of a particle can be measured simultaneously with no limit
Answer: The more precisely the position is known, the less precisely the momentum can be known
Subjects: Modern Physics, Physics
In the photoelectric effect, the energy of emitted electrons depends on:
A. The frequency of the incident light
B. The intensity of the incident light
C. The temperature of the material
D. The mass of the material
Answer: The frequency of the incident light
Subjects: Modern Physics, Physics
Which principle states that no two identical fermions can occupy the same quantum state simultaneously?
A. Pauli Exclusion Principle
B. Heisenberg Uncertainty Principle
C. Bohr's Principle
D. Planck's Principle
Answer: Pauli Exclusion Principle
Subjects: Modern Physics, Physics
The ‘Schrödinger’s Cat’ thought experiment illustrates:
A. Quantum superposition
B. Wave-particle duality
C. Quantum entanglement
D. Photoelectric effect
Answer: Quantum superposition
Subjects: Modern Physics, Physics
What is the main concept of Quantum Mechanics?
A. Wave-particle duality and probabilistic nature of particles
B. Classical mechanics and deterministic laws
C. Relativity of space and time
D. Electromagnetic waves and fields
Answer: Wave-particle duality and probabilistic nature of particles
Subjects: Modern Physics, Physics
Which scientist is known for the uncertainty principle?
A. Werner Heisenberg
B. Niels Bohr
C. Albert Einstein
D. Erwin Schrödinger
Answer: Werner Heisenberg
Subjects: Modern Physics, Physics
What is the photoelectric effect?
A. Emission of electrons when light strikes a material
B. Emission of photons when electrons are accelerated
C. Absorption of light by a material
D. Emission of X-rays when a material is heated
Answer: Emission of electrons when light strikes a material
Subjects: Modern Physics, Physics