Physics
Matter and Quantum Mechanics
1,427 Questions
This topic addresses core concepts in quantum mechanics, statistical thermodynamics, and states of matter. Questions cover quantum field theory, particle behavior, and statistical distributions. This material is essential for physics competitive exams.
Statistical ensemblesQuantum field theoryParticle physicsStates of matterWave particle duality
Matter and Quantum Mechanics Questions
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I would choose the metaphysical dimension because it embraces the physical universe as well.
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Can we ever bridge the gap?
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The answer has been a grey area for the scientist community.
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On the contrary, both have fundamental value.
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The answer can open a can of worms.
D
Correct answer
Explanation
The question is whether one is valuable and the other is not. The answer is both are valuable. Only this option talks about values (fundamental value) of waves.
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Wave mechanics
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Uncertainly principle
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Exclusion principle
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Atomic spectrum of hydrogen atom in visible region
C
Correct answer
Explanation
The Pauli Exclusion Principle states that no two electrons in an atom can have the same set of four quantum numbers.
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Wave mechanics
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Uncertainly principle
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Exclusion principle
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Atomic spectrum of hydrogen atom in visible region
D
Correct answer
Explanation
Johann Balmer derived the Balmer formula to describe the spectral line emissions of the hydrogen atom in the visible region.
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Wave mechanics
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Uncertainly principle
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Exclusion principle
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Atomic spectrum of hydrogen atom in visible region
B
Correct answer
Explanation
The Heisenberg Uncertainty Principle states that one cannot simultaneously know the exact position and momentum of a particle.
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Wave mechanics
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Uncertainly principle
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Exclusion principle
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Atomic spectrum of hydrogen atom in visible region
A
Correct answer
Explanation
Erwin Schrodinger is famous for developing the wave equation that describes how the quantum state of a physical system changes with time, forming the basis of wave mechanics.
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Astronomy
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Elementary particles
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Theory of black holes
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Theory of numbers
B
Correct answer
Explanation
Satyendra Nath Bose is famous for his collaboration with Albert Einstein in developing the Bose-Einstein statistics, which describes the behavior of elementary particles known as bosons.
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Longitudinal waves
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Electromagnetic waves
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Elastic waves
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Matter waves
D
Correct answer
Explanation
Electron microscopes utilize the wave-like properties of electrons, which are described as matter waves (de Broglie waves). This allows for much higher resolution than optical microscopes.
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particle physics
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atomic physics
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physics in communication
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nuclear physics
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physics in semiconductor
A
Correct answer
Explanation
Peter Higgs was awarded the Copley Medal for his theoretical prediction of the Higgs boson, a fundamental particle that explains how other particles acquire mass, which is a cornerstone of particle physics.
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Atom is electrically neutral.
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Atoms cannot exist independently.
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Atom can be divided into smaller particles.
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Atoms combine to form molecules.
B
Correct answer
Explanation
Noble gases (like helium or neon) exist as individual atoms, so the statement that atoms cannot exist independently is false. The other statements are generally accepted facts about atomic theory.
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microscopic property of matter
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extensive properties of matter
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intensive properties of matter
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phases of matter
D
Correct answer
Explanation
Each state of matter has distinctive properties that can be used to identify it. Each of these states of matter is also known as a phase. Things can move from one phase to another phase when special forces are present. For example, temperature can cause matter to change phases. Water is a liquid but if temperatures drop low enough, water can turn to ice, which is a solid.
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macroscopic properties
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microscopic properties
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intensive properties
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extensive properties
C
Correct answer
Explanation
Properties that do not depend on the amount of the matter present are known as intensive property. e.g.colour ,odour, luster, malleability, conductivity, etc. Intensive properties are extremely important because every possible kind of matter possesses a unique set of intensive properties that distinguishes it from every other kind of matter. In other words, intensive properties serve to characterise matter.
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strange quark
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charm quark
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muon
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tau
C
Correct answer
Explanation
The muon is an elementary particle similar to the electron, with a unitary negative electric charge and a spin of 1/2. Together with the electron, the tau, and the three neutrinos, it is classified as a lepton.
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The up quark
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The down quark
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The bottom quark
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The top quark
A
Correct answer
Explanation
The up quark or u quark (from its symbol, u) is the lightest of all quarks, a type of elementary particle, and a major constituent of matter. It, along with the down quark, forms the neutrons (one up quark, two down quarks) and protons (two up quarks, one down quark) of atomic nuclei.
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no mass but occupies space
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mass but occupies no space
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mass and occupies space
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no mass and occupies no space
C
Correct answer
Explanation
Matter is that Physical substance in general, as distinct from mind and spirit; (in physics) that which occupies space and possesses rest mass, especially as distinct from energy
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cohesive force
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adhesive force
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kinetic energy
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thermal energy
A
Correct answer
Explanation
Cohesive force is the force of attraction between the molecules of the same substance. Cohesive force is stronger in solids than in liquid. Cohesive force is stronger in liquids than in gas.