Fundamentals Of Quantum Physics

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  • 1/10 Questions

    Quantum mechanics is called the science of what?

    • The very large
    • The very small
    • The big
    • The colossal
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About This Quiz

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Based on theory, the quantum physics shows and explains the interaction between matter and energy.

Fundamentals Of Quantum Physics - Quiz

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  • 2. 
    Quantum physics explains the interaction between? - ProProfs

    Quantum physics explains the interaction between?

    • Energy

    • Energy and Nuclear

    • Atomic and Molecules

    • Matter and energy

    Correct Answer
    A. Matter and energy
    Explanation
    Quantum physics is a branch of physics that deals with the behavior of matter and energy at the smallest scales. It explains how particles and energy interact with each other, providing a framework to understand phenomena such as particle-wave duality and quantum entanglement. Therefore, the correct answer is "Matter and energy" because quantum physics specifically focuses on the interaction between these two fundamental components of the universe.

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  • 3. 
    The emission of electron from the surface of a metal is called? - ProProfs

    The emission of electron from the surface of a metal is called?

    • The photoelectric effect

    • Compton

    • Blackbody Radiation

    • X-ray Spectra

    Correct Answer
    A. The photoelectric effect
    Explanation
    The emission of electrons from the surface of a metal is called the photoelectric effect. This phenomenon occurs when light of a certain frequency, known as the threshold frequency, strikes the metal surface and causes the electrons to be ejected. The photoelectric effect was first explained by Albert Einstein and is an important concept in quantum physics. It has numerous applications, including solar panels and photodetectors.

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  • 4. 
    The momentum and the position of a particle cannot simultaneously be measured with complete certainty, is based on what assumption? - ProProfs

    The momentum and the position of a particle cannot simultaneously be measured with complete certainty, is based on what assumption?

    • The uncertainty principle

    • Relativity Theory

    • Plank's theory

    • Particle duality

    Correct Answer
    A. The uncertainty principle
    Explanation
    The uncertainty principle states that it is impossible to simultaneously measure the momentum and position of a particle with complete certainty. This principle is based on the assumption that there is inherent uncertainty in the nature of particles, and that the act of measuring one property of a particle will necessarily disturb the measurement of the other property. This principle was proposed by Werner Heisenberg in 1927 and has been a fundamental concept in quantum mechanics ever since.

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  • 5. 
    Which of the following laws was the first quantum theory in physics? - ProProfs

    Which of the following laws was the first quantum theory in physics?

    • Faraday's Law

    • Uncertainty Principle

    • Lewi's Law

    • Planck's Law

    Correct Answer
    A. Planck's Law
    Explanation
    Planck's Law was the first quantum theory in physics. Proposed by Max Planck in 1900, it introduced the concept of energy being quantized into discrete packets called quanta. This theory revolutionized our understanding of light and laid the foundation for the development of quantum mechanics. Faraday's Law, Lewi's Law, and the Uncertainty Principle are important principles in physics, but they are not considered the first quantum theory.

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  • 6. 
    Who discovered the photoelectric effect? - ProProfs

    Who discovered the photoelectric effect?

    • Micheal Faraday

    • Isaac Newton

    • Heinrich Hertz

    • Hertz

    Correct Answer
    A. Heinrich Hertz
    Explanation
    Heinrich Hertz discovered the photoelectric effect. The photoelectric effect refers to the emission of electrons from a material when it is exposed to light or other forms of electromagnetic radiation. Hertz conducted experiments in the late 19th century that demonstrated this phenomenon, providing evidence for the particle-like behavior of light and laying the foundation for the development of quantum mechanics. His work was instrumental in advancing our understanding of the interaction between light and matter.

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  • 7. 
    The ability of an object in quantum theory to be in more than one quantum state at the same is know as? - ProProfs

    The ability of an object in quantum theory to be in more than one quantum state at the same is know as?

    • Wave-particle duality

    • Decoherence

    • Nonlocality

    • Superposition

    Correct Answer
    A. Superposition
    Explanation
    Superposition refers to the ability of an object in quantum theory to exist in multiple quantum states simultaneously. This means that the object can be in a combination or "superposition" of different states until it is measured or observed, at which point it collapses into a single state. This concept is a fundamental principle in quantum mechanics and is essential to understanding the behavior of particles at the quantum level.

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  • 8. 
    Who predicted that matter acts as a wave? - ProProfs

    Who predicted that matter acts as a wave?

    • Rutherford

    • Heinrich Hertz

    • Heisberg

    • Louis de Broglie

    Correct Answer
    A. Louis de Broglie
    Explanation
    Louis de Broglie predicted that matter acts as a wave. This is known as the wave-particle duality theory, which suggests that particles such as electrons and protons can exhibit both wave-like and particle-like behavior. De Broglie's theory was based on the observation that particles can have wave-like properties, just like light can have particle-like properties. This idea was later confirmed by experiments, leading to the development of quantum mechanics.

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  • 9. 
    The electromagnetic radiation emitted from the surface of an object due to the object's internal energy is known as? - ProProfs

    The electromagnetic radiation emitted from the surface of an object due to the object's internal energy is known as?

    • Photon

    • Nuclear Radiation

    • Thermal Radiation

    • Spectra Emission

    Correct Answer
    A. Thermal Radiation
    Explanation
    Thermal radiation refers to the electromagnetic radiation that is emitted from the surface of an object due to its internal energy. This type of radiation is produced when the object's atoms and molecules vibrate and move, resulting in the emission of photons. Unlike nuclear radiation, which is associated with the decay of atomic nuclei, or spectra emission, which refers to the specific wavelengths of light emitted by atoms, thermal radiation is directly related to the object's temperature and is commonly observed as heat or infrared radiation.

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  • 10. 
    The energy required by an electron to escape from the surface of a given metal is called? - ProProfs

    The energy required by an electron to escape from the surface of a given metal is called?

    • Threshold frequency

    • Threshold Effect

    • Work Function

    • The photoelectric effect

    Correct Answer
    A. Work Function
    Explanation
    The energy required by an electron to escape from the surface of a given metal is known as the work function. This energy is specific to each metal and is determined by the strength of the attractive forces between the electrons and the metal atoms. When the energy of incident photons is greater than the work function, electrons can be emitted from the metal surface in a process known as the photoelectric effect. The work function is an important concept in understanding the behavior of electrons in metals and their interaction with light.

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  • Current Version
  • Mar 18, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 02, 2018
    Quiz Created by
    Livyn
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