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Engineering Physics and Cosmology

Description: This quiz covers the fundamental concepts and theories related to Engineering Physics and Cosmology.
Number of Questions: 15
Created by:
Tags: engineering physics cosmology quantum mechanics relativity thermodynamics
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Which of the following is not a fundamental force in physics?

  1. Gravitational force

  2. Electromagnetic force

  3. Strong nuclear force

  4. Weak nuclear force

  5. Centrifugal force

Show answer
Correct Option: E
Explanation:

Centrifugal force is not a fundamental force in physics. It is an inertial force that arises due to the rotation of a frame of reference.

The study of the origin, evolution, and structure of the universe is known as:

  1. Cosmology

  2. Astrophysics

  3. Astronomy

  4. Quantum Mechanics

  5. Thermodynamics

Show answer
Correct Option: A
Explanation:

Cosmology is the branch of physics that studies the origin, evolution, and structure of the universe.

According to the Big Bang theory, the universe began as a:

  1. Singularity

  2. Black hole

  3. Neutron star

  4. White dwarf

  5. Supernova

Show answer
Correct Option: A
Explanation:

The Big Bang theory states that the universe began as a singularity, a point of infinite density and temperature.

Which of the following is not a type of electromagnetic radiation?

  1. Gamma rays

  2. X-rays

  3. Ultraviolet rays

  4. Infrared rays

  5. Sound waves

Show answer
Correct Option: E
Explanation:

Sound waves are mechanical waves that require a medium to propagate. Electromagnetic radiation, on the other hand, can travel through a vacuum.

The uncertainty principle, formulated by Werner Heisenberg, states that:

  1. The more precisely the position of a particle is known, the less precisely its momentum can be known.

  2. The more precisely the energy of a particle is known, the less precisely its time of existence can be known.

  3. Both (a) and (b)

  4. None of the above

Show answer
Correct Option: C
Explanation:

The uncertainty principle states that there is a fundamental limit to the precision with which certain pairs of physical properties, such as position and momentum, or energy and time, can be known simultaneously.

The theory of general relativity, developed by Albert Einstein, explains:

  1. The behavior of objects in strong gravitational fields.

  2. The behavior of objects moving at very high speeds.

  3. The behavior of subatomic particles.

  4. The behavior of electromagnetic waves.

  5. The behavior of fluids.

Show answer
Correct Option: A
Explanation:

General relativity is a theory of gravitation that explains the behavior of objects in strong gravitational fields.

The laws of thermodynamics govern:

  1. The transfer of heat and energy.

  2. The behavior of gases.

  3. The behavior of liquids.

  4. The behavior of solids.

  5. The behavior of chemical reactions.

Show answer
Correct Option: A
Explanation:

The laws of thermodynamics govern the transfer of heat and energy between systems.

The first law of thermodynamics states that:

  1. Energy cannot be created or destroyed, only transferred or transformed.

  2. Entropy always increases in an isolated system.

  3. Heat flows from hot objects to cold objects.

  4. The pressure of a gas is proportional to its temperature.

  5. The volume of a gas is inversely proportional to its pressure.

Show answer
Correct Option: A
Explanation:

The first law of thermodynamics states that energy cannot be created or destroyed, only transferred or transformed.

The second law of thermodynamics states that:

  1. Energy cannot be created or destroyed, only transferred or transformed.

  2. Entropy always increases in an isolated system.

  3. Heat flows from hot objects to cold objects.

  4. The pressure of a gas is proportional to its temperature.

  5. The volume of a gas is inversely proportional to its pressure.

Show answer
Correct Option: B
Explanation:

The second law of thermodynamics states that entropy always increases in an isolated system.

The third law of thermodynamics states that:

  1. Energy cannot be created or destroyed, only transferred or transformed.

  2. Entropy always increases in an isolated system.

  3. Heat flows from hot objects to cold objects.

  4. The pressure of a gas is proportional to its temperature.

  5. The entropy of a perfect crystal at absolute zero is zero.

Show answer
Correct Option: E
Explanation:

The third law of thermodynamics states that the entropy of a perfect crystal at absolute zero is zero.

Which of the following is not a type of elementary particle?

  1. Electron

  2. Proton

  3. Neutron

  4. Quark

  5. Photon

Show answer
Correct Option: E
Explanation:

Photon is not an elementary particle, it is a quantum of light and other forms of electromagnetic radiation.

The fundamental unit of electric charge is the:

  1. Electron

  2. Proton

  3. Neutron

  4. Quark

  5. Photon

Show answer
Correct Option: A
Explanation:

The fundamental unit of electric charge is the electron.

The mass of an atom is mostly concentrated in its:

  1. Electrons

  2. Protons

  3. Neutrons

  4. Quarks

  5. Photons

Show answer
Correct Option:
Explanation:

The mass of an atom is mostly concentrated in its protons and neutrons.

Which of the following is not a type of nuclear reaction?

  1. Fission

  2. Fusion

  3. Radioactive decay

  4. Chemical reaction

  5. Nuclear transmutation

Show answer
Correct Option: D
Explanation:

Chemical reaction is not a type of nuclear reaction.

The process by which a nucleus of an atom splits into two or more smaller nuclei is called:

  1. Fission

  2. Fusion

  3. Radioactive decay

  4. Chemical reaction

  5. Nuclear transmutation

Show answer
Correct Option: A
Explanation:

The process by which a nucleus of an atom splits into two or more smaller nuclei is called fission.

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