Physics · Science General

Origin and Evolution of the Universe

1,962 Questions

The origin and evolution of the universe deals with cosmological models, the Big Bang theory, and dark energy. These fundamental physics concepts appear regularly in general science sections of competitive exams. Practice these questions to build a strong grasp of cosmic structures and theoretical physics.

Big Bang TheoryDark energy modelsStandard Model problemsGalaxy formationHolographic dark energy

Origin and Evolution of the Universe Questions

Multiple choice general knowledge science & technology

Which theory tells about Explosion and Implosion?

  1. Big Bang

  2. Steady State

  3. Oscillationg or Pulsating

  4. Quasi Steady State
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The Oscillating (or Pulsating) Universe theory proposes that the universe undergoes endless cycles of expansion (Big Bang) and contraction (Big Crunch). This differs from the standard Big Bang theory (single expansion) or Steady State theory (continuous creation).

Multiple choice general knowledge science & technology

The universe is expanding at the same rate in each direction. Where is the centre if The Universe

  1. The sun

  2. It has no center

  3. The Milky way

  4. The Earth
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The universe has no center because expansion happens everywhere simultaneously. The Big Bang occurred at all points in space, not from a single location. The Milky Way, Sun, and Earth are just one small part of the universe, not its center.

Multiple choice general knowledge science & technology

TThermonuclear Theoryhis theory says the universe is between 8 and 13 billion years old

  1. Thermonuclear Theory

  2. Steady State

  3. Big Bang

  4. All of the Abvoe
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The Big Bang theory states the universe began 13.8 billion years ago and has been expanding ever since. Thermonuclear theory and Steady State are different cosmological models. The question has garbled text with 'TThermonuclear Theoryhis' at the start.

Multiple choice general knowledge science & technology

Which of these is NOT a way to try to measure the size of the universe?

  1. Which of these is NOT a way to try to measure the size of the universe?

  2. With a microscope to study these objects

  3. By measuring the speed with which distant galaxies are rushing away from the earth.these objects

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Using a microscope is not a valid method for measuring the size of the universe. Microscopes study tiny objects, while cosmic measurements require telescopes, redshift observations, and cosmic distance ladders. The question has structural issues with repeated text.

Multiple choice general knowledge

Guess the theory which states that the world will come to an end by December 21st,2012.

  1. Big Bang Theory

  2. Mayan's Prophecy

  3. The Biblical theory

  4. Theory in Epic Mahabharatha
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Mayan Prophecy (or Mayan calendar prediction) claimed that December 21, 2012 would mark the end of a cycle. This date was the end of the Mayan Long Count calendar, which some interpreted as a doomsday prediction. The Big Bang Theory explains the universe's origin.

Multiple choice general knowledge science & technology

Is Universe continuously expanding?

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The universe has been continuously expanding since the Big Bang, as first demonstrated by Edwin Hubble's observations of galactic redshifts. This expansion is accelerating due to dark energy, causing galaxies to move away from each other at increasing rates, though gravity binds local structures together.

Multiple choice technology

__________ universes are those universes that share common components such as parameters, classes, objects or joins.

  1. Joined

  2. Linked

  3. Shared

  4. Connected
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Linked Universes share common components like parameters, classes, objects, and joins across multiple universe definitions. This allows reusability and consistency when building related universes in BI tools like BusinessObjects. The other terms (joined, shared, connected) are not the official terminology for this concept.

Multiple choice technology databases

How can you load universe into the repository?

  1. Exporting the universe

  2. Extracting the Universe

  3. Copying the Universe

  4. Exporting and then Extracting Universe
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The question uses terminology like 'universe' and 'repository' which suggests a specific system (possibly SAP or enterprise software). In most such systems, data is exported from source systems and then extracted/loaded into repositories or data warehouses. Option D covers both steps.

Multiple choice technology

It is possible to create a link between two universes through the universe designer

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Universe Designer allows linking two universes by creating a derived universe that inherits components from a base universe. This feature enables reusability and modular design where one universe can include components from another. The link is established through the universe's include or inheritance mechanism.

Multiple choice

The passage is primarily concerned with

Directions: Read the passage and answer the following question:

            After evidence was obtained in the 1920s that the universe is expanding, it became reasonable to ask: will the universe continue to expand indefinitely, or is there enough mass in it for the mutual attraction of its constituents to bring this expansion to a halt? It can be calculated that the critical density of matter needed to break the expansion and “close” the universe, is equivalent to three hydrogen atoms per cubic metre. But the density of the observable universe-luminous matter in the form of galaxies-comes to only a fraction of this. If the expansion of the universe is to stop, there must be enough invisible matter in the universe to exceed the luminous matter in density by a factor of roughly 70.
            Our contribution to the search for this “missing matter” has been to study the rotational velocity of galaxies at various distances from their centre of rotation. It has been known for some time that outside the bright nucleus of typical spiral galaxy luminosity falls off rapidly with distance from the centre. If luminosity is a true indicator of mass, most of the mass would be concentrated toward the centre. Outside the nucleus the rotational velocity would decrease geometrically with the distance from the centre, in conformity with Kepler’s law. Instead we have found that the rotational velocity in spiral galaxies either remains constant with increasing distance from the centre or increases slightly. This unexpected result indicates that the falloff in luminous mass with distance from the centre is balanced by an increase in nonluminous mass.
            Our findings suggest that as much as 90 percent of the mass of the universe is not radiating at any wavelength with enough intensity to be detected on the Earth. Such dark matter could be in the form of extremely dim stars of low mass of large planets like Jupiter, or of black holes, either small of massive. While it has not yet been determined whether this mass is sufficient to “close” the universe, some physicists consider it significant that estimates are converging on the critical value.

  1. Summarizing research findings

  2. Criticizing an accepted view

  3. Defending a controversial approach

  4. Contrasting competing theories
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

 It is a summary of different findings.

Multiple choice

The authors' suggestion that “as much as 90 percent of the mass of the universe is not radiating at any wavelength with enough intensity to be detected on the Earth” (last para) would be most weakened if which of the following were discovered to be true ?

Directions: Read the passage and answer the following question:

            After evidence was obtained in the 1920s that the universe is expanding, it became reasonable to ask: will the universe continue to expand indefinitely, or is there enough mass in it for the mutual attraction of its constituents to bring this expansion to a halt? It can be calculated that the critical density of matter needed to break the expansion and “close” the universe, is equivalent to three hydrogen atoms per cubic metre. But the density of the observable universe-luminous matter in the form of galaxies-comes to only a fraction of this. If the expansion of the universe is to stop, there must be enough invisible matter in the universe to exceed the luminous matter in density by a factor of roughly 70.
            Our contribution to the search for this “missing matter” has been to study the rotational velocity of galaxies at various distances from their centre of rotation. It has been known for some time that outside the bright nucleus of typical spiral galaxy luminosity falls off rapidly with distance from the centre. If luminosity is a true indicator of mass, most of the mass would be concentrated toward the centre. Outside the nucleus the rotational velocity would decrease geometrically with the distance from the centre, in conformity with Kepler’s law. Instead we have found that the rotational velocity in spiral galaxies either remains constant with increasing distance from the centre or increases slightly. This unexpected result indicates that the falloff in luminous mass with distance from the centre is balanced by an increase in nonluminous mass.
            Our findings suggest that as much as 90 percent of the mass of the universe is not radiating at any wavelength with enough intensity to be detected on the Earth. Such dark matter could be in the form of extremely dim stars of low mass of large planets like Jupiter, or of black holes, either small of massive. While it has not yet been determined whether this mass is sufficient to “close” the universe, some physicists consider it significant that estimates are converging on the critical value.

  1. The density of the observable universe is greater than most previous estimates have suggested

  2. The bright nucleus of a typical spiral galaxy also contains some nonluminous matter

  3. Some galaxies do not rotate or rotate too slowly for their rotational velocity to be measured.

  4. Spiral galaxies are less common than types of galaxies that contain little nonluminous matter.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

If luminosity is a true indicator of mass, most of the mass would be concentrated toward the centre. Outside the nucleus the rotational velocity would decrease geometrically with the distance from the centre, in conformity with Kepler's law. Instead we have found that the rotational velocity in spiral galaxies either remains constant with increasing distance from the centre or increases slightly. This unexpected result indicates that the falloff in luminous mass with distance from the centre is balanced by an increase in nonluminous mass.