Quantum Mechanics I - SS3 Physics Past Questions and Answers - page 1
Which of the following is a fundamental postulate of quantum mechanics?
Energy is conserved
Momentum is conserved
The position and momentum of a particle cannot both be known exactly
The velocity of light is constant
Which of the following best describes the principle of superposition in quantum mechanics?
The combination of two or more waves to form a new wave
The interference of waves resulting in cancellation or reinforcement
The ability of a particle to exist in multiple states simultaneously
The bending of waves around an obstacle or through an opening
What is an atomic orbital?
The path an electron takes around the nucleus
The region around an atomic nucleus where an electron is most likely to be found
The number of protons in an atomic nucleus
The energy required to remove an electron from an atom
Which of the following is a consequence of the Heisenberg uncertainty principle?
The energy of a particle is conserved
The momentum of a particle is conserved
The position and momentum of a particle cannot both be known exactly
The velocity of light is constant
What is the basis of quantum mechanics?
What are the applications of quantum mechanics?
What is wave-particle duality?
The idea that particles can exist as both waves and particles simultaneously
The idea that particles can only exist as waves
The idea that particles can only exist as particles
The idea that waves can only exist as particles
The uncertainty principle states that:
The position and momentum of a particle cannot both be precisely known at the same time
The energy and time of a particle cannot both be precisely known at the same time
The spin and angular momentum of a particle cannot both be precisely known at the same time
The mass and velocity of a particle cannot both be precisely known at the same time
What is the de Broglie wavelength?
The wavelength of a particle
The wavelength of a wave
The wavelength of a photon
The wavelength of a nucleus
Which of the following experiments supports the wave-particle duality?
The double-slit experiment
The photoelectric effect
The Stern-Gerlach experiment
The Franck-Hertz experiment