Online Physics Quiz
Welcome to the Online Physics Quiz, an interactive platform where you can test your knowledge and understanding of various physics concepts from the comfort of your own space. This quiz is designed to cater to a diverse audience. Engage with questions spanning classical mechanics, electromagnetism, thermodynamics, optics, and more, all conveniently accessible online.
Expect a mix of multiple-choice questions, true/false inquiries, and problem-solving scenarios that will challenge your analytical skills and application of physics principles. This online quiz provides a flexible and engaging way to explore the fascinating realm of physics, allowing you to assess and enhance your understanding Read moreof the subject at your own pace. Good luck, and enjoy the journey through the intriguing world of online physics assessment!
- 1.
What does the "m" stand for in maser, the predecessor of the laser?
- A.
Microwave
- B.
Moving
- C.
Mass
- D.
Multiple
Correct Answer
A. MicrowaveExplanation
The "m" in maser stands for "microwave." A maser is a device that produces coherent and amplified electromagnetic waves in the microwave range of the electromagnetic spectrum. It is the predecessor of the laser (Light Amplification by Stimulated Emission of Radiation), which operates in the optical or infrared range.Rate this question:
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- 2.
The Bernoulli Effect concerns what physical system?
- A.
A Rotating Frame Of Reference
- B.
A Distribution Of Charges
- C.
A Moving Fluid
- D.
An Anti-Ferro Magnet
Correct Answer
C. A Moving FluidExplanation
The Bernoulli Effect concerns a moving fluid. It is a principle of fluid dynamics that describes the behavior of a fluid (such as air or water) as it flows through a region of varying pressure. According to the Bernoulli's principle, as the speed of a fluid increases, its pressure decreases, and vice versa.Rate this question:
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- 3.
Masses are to Newton's Gravitational Law as charges are to what?
- A.
Faraday's Law
- B.
Coulomb's Law
- C.
Fermat's Law
- D.
Henry's Law
Correct Answer
B. Coulomb's LawExplanation
The analogy between masses in Newton's Gravitational Law and charges in Coulomb's Law lies in their roles in determining the respective forces. Newton's Gravitational Law governs the gravitational force between two masses, with force increasing as masses or their proximity grow. Similarly, Coulomb's Law deals with the electrostatic force between charged particles, illustrating that force intensifies with the magnitudes of charges and decreases with their separation.Rate this question:
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- 4.
What does the word "quantum" mean?
- A.
Wave
- B.
Portion
- C.
Electron
- D.
Uncertainty
Correct Answer
B. PortionExplanation
The word "quantum" means "portion" or "quantity" in Latin. In the context of physics, particularly in quantum mechanics, it refers to the smallest possible discrete unit of any physical property. The term was introduced to describe the quantized values that certain physical properties, such as energy and angular momentum, can take.Rate this question:
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- 5.
How many quarks are in an electron?
- A.
One
- B.
Three
- C.
Two
- D.
None
Correct Answer
D. NoneExplanation
An electron is a type of elementary particle and is not composed of quarks. Quarks are fundamental constituents of particles known as hadrons, such as protons and neutrons. Electrons, along with other elementary particles like neutrinos, are classified as leptons and are not made up of quarks. Each electron is considered a point-like particle with no substructure, and its properties are described within the framework of the Standard Model of particle physics.Rate this question:
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- 6.
What word describes a material that maintains a magnetic field after an external field is removed?
- A.
Isomagnetic
- B.
Diamagnetic
- C.
Paramagnetic
- D.
Ferromagnetic
Correct Answer
D. FerromagneticExplanation
A material that maintains a magnetic field after an external field is removed is called "ferromagnetic." Ferromagnetic materials have a high magnetic permeability, and they exhibit strong and persistent magnetic properties. When exposed to an external magnetic field, the magnetic domains within a ferromagnetic material align in the direction of the field.Rate this question:
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- 7.
What physical constant did Henry Cavendish first determine using two weights and a cantilever?
- A.
Charge Of The Electron
- B.
Speed Of Light
- C.
Rest-Mass Energy
- D.
Gravitational Constant
Correct Answer
D. Gravitational ConstantExplanation
Henry Cavendish first determined the gravitational constant using two weights and a torsion balance, not a cantilever. The experiment, conducted in the late 18th century, involved measuring the twisting or torsional effect caused by the gravitational attraction between lead spheres on the ends of a horizontal bar and smaller lead spheres placed nearby. The gravitational constant (denoted by G) quantifies the strength of the gravitational force between two masses and is a fundamental constant in physics.Rate this question:
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- 8.
What Scottish physicist's name adorns both a set of electromagnetic equations and the distribution of velocities within a gas at equilibrium?
- A.
William Moseley
- B.
Paul Dirac
- C.
James Clerk Maxwell
- D.
Michael Faraday
Correct Answer
C. James Clerk MaxwellExplanation
The Scottish physicist James Clerk Maxwell is associated with both a set of electromagnetic equations, known as Maxwell's equations, and the distribution of velocities within a gas at equilibrium, known as the Maxwell–Boltzmann distribution. Maxwell's equations describe the behavior of electric and magnetic fields and played a crucial role in the development of classical electromagnetism and the understanding of light.Rate this question:
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- 9.
What measure is used to express reactance in conductors and capacitors?
- A.
Ohms
- B.
Henrys
- C.
Farads
- D.
Siemens
Correct Answer
A. OhmsExplanation
Reactance in conductors and capacitors is expressed in ohms (Ω). Reactance is a concept in AC (alternating current) circuits that represents the opposition to the flow of electric current. In the context of capacitors, capacitive reactance (XC​) is measured in ohms and depends on the frequency of the AC signal and the capacitance of the capacitor.Rate this question:
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- 10.
What form of spectroscopy is concerned with the strength of the magnetic field surrounding atoms?
- A.
NMR
- B.
UV-VIS
- C.
MS
- D.
IR
Correct Answer
A. NMRExplanation
NMR spectroscopy is concerned with the strength of the magnetic field surrounding atomic nuclei. In NMR, the behavior of atomic nuclei, particularly those containing certain isotopes with magnetic properties (like hydrogen nuclei in organic compounds), is studied in the presence of a strong external magnetic field. The nuclei absorb and re-emit radiofrequency radiation and the resulting spectra provide information about the local environment of the nuclei.Rate this question:
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- 11.
Which of the following is NOT a fundamental force of nature?
- A.
Gravitational force
- B.
Electromagnetic force
- C.
Strong nuclear force
- D.
Friction force
Correct Answer
D. Friction forceExplanation
The four fundamental forces of nature are gravity, electromagnetism, the strong nuclear force, and the weak nuclear force. Friction is a force that opposes motion, but it is not a fundamental force. It arises from the interactions between the atoms and molecules of the surfaces in contact.Rate this question:
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- 12.
What is the force of gravity on the moon compared to that of the Earth?
- A.
There Is No Gravitational Force On Our Moon
- B.
It's Equal To That Of The Earth
- C.
1/8 That Of The Earth
- D.
1/6 That Of The Earth
Correct Answer
D. 1/6 That Of The EarthExplanation
The force of gravity on the moon is approximately 1/6th that of the Earth. This is because the gravitational force between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers. The moon has much less mass than the Earth, and its gravitational field strength is weaker. As a result, an object on the moon weighs about 1/6th of what it would weigh on Earth.Rate this question:
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- 13.
Who discovered the neutron, and in what year?
- A.
Albert Einstein In 1910
- B.
John Dunning In 1935
- C.
Al Gore In 1922
- D.
James Chadwick In 1932
Correct Answer
D. James Chadwick In 1932Explanation
The neutron was discovered by James Chadwick in 1932. Chadwick's experiments provided evidence for the existence of the neutron, a subatomic particle with no electric charge but with a mass similar to that of a proton.Rate this question:
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- 14.
What is a Beta particle?
- A.
Pion
- B.
Electron
- C.
Lepton
- D.
Neutron
Correct Answer
B. ElectronExplanation
A Beta particle is an electron. In the context of nuclear physics, beta particles refer to electrons emitted from a nucleus during a process called beta decay. Beta decay involves the transformation of a neutron into a proton within the nucleus, and in the process, a beta particle (electron) is emitted. This emission helps maintain the balance of charge and energy within the nucleus.Rate this question:
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- 15.
What physical laws state that no two particles may occupy the same quantum state simultaneously?
- A.
Warner's Spatial Theory
- B.
Einstein's Theory Of Relativity
- C.
The Aufbau Principle
- D.
The Pauli Exclusion Principle
Correct Answer
D. The Pauli Exclusion PrincipleExplanation
The physical law that states that no two particles may occupy the same quantum state simultaneously is known as the Pauli Exclusion Principle. This principle, formulated by Wolfgang Pauli, applies to fermions, which include particles like electrons. According to the Pauli Exclusion Principle, no two fermions within a system can have identical quantum numbers, which include properties such as spin, orbital angular momentum, and magnetic quantum number.Rate this question:
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Quiz Review Timeline +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
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Current Version
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Nov 24, 2024Quiz Edited by
ProProfs Editorial Team
Expert Reviewed by
Matt Balanda -
May 18, 2015Quiz Created by
Cambronbill3
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