Modern Physics - Quantum Mechanics - SS2 Physics Past Questions and Answers - page 1
According to wave-particle duality, particles can exhibit both particle-like and wave-like properties. Which experiment provides evidence for this phenomenon?
Young's double-slit experiment
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Photoelectric effect
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Compton scattering
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Davisson-Germer experiment
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The uncertainty principle, formulated by Werner Heisenberg, states that there is a fundamental limit to the simultaneous precision with which certain pairs of physical properties can be known. Which properties does the uncertainty principle apply to?
Position and momentum
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Energy and time
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Spin and charge
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Mass and velocity
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The uncertainty principle states that as the uncertainty in the measurement of one property decreases, the uncertainty in the measurement of the other property:
Also decreases
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Increases
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Remains constant
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Becomes irrelevant
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The wave-particle duality is most pronounced for particles with:
High energy
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Low energy
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Large mass
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Small mass
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Which of the following phenomena demonstrates the wave-like behaviour of particles?
Diffraction
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Photoelectric effect
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Compton scattering
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Electron tunnelling
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The uncertainty principle implies that it is impossible to simultaneously know the exact:
Position and velocity of a particle
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Energy and frequency of a wave
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Momentum and spin of a particle
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Wavelength and amplitude of a wave
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The wave-particle duality suggests that particles can exist in:
Only one location at a time
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Multiple locations simultaneously
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Only one energy state
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Multiple energy states simultaneously
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The mathematical description of wave-particle duality is provided by:
Newton's laws of motion
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Maxwell's equations
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Schrödinger's equation
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Einstein's theory of relativity
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Explain the concept of wave-particle duality and provide examples of experiments that support this idea.
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Describe the uncertainty principle and its implications on the simultaneous measurement of certain physical properties.
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