Branes MCQs with Answers

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Branes Online Quiz

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• Test Name: Branes MCQ Quiz Practice
• Type: Quiz Test
• Total Questions: 40
• Total Marks: 40
• Time: 40 minutes

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Branes

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1 / 40

How can branes end?

On other branes

They cannot end

On point particles

2 / 40

What is a key feature of the Randall-Sundrum model?

A single brane with warped extra dimensions

Multiple parallel universes

Branes without extra dimensions

3 / 40

What is the worldvolume of a brane?

The spacetime region it occupies

Its energy

Its mass

4 / 40

Which type of brane is associated with M-theory?

M-brane

T-brane

N-brane

5 / 40

What does the term "brane tension" indicate in a cosmological context?

The speed of brane movement

The temperature of the brane

The influence of branes on the expansion of the universe

6 / 40

What is the term for a brane with zero spatial dimensions?

D0-brane

D1-brane

D2-brane

7 / 40

What is meant by "brane gas cosmology"?

A model with only strings

A model where the early universe consisted of a gas of branes

A model without branes

8 / 40

What is a p-brane with p=0 called?

D2-brane

D0-brane

D1-brane

9 / 40

What is the role of D-branes in string theory?

They represent elementary particles

They provide boundary conditions for open strings

They describe closed strings

10 / 40

What is a p-brane with p=1 called?

Point particle

Membrane

String

11 / 40

What theory unifies the five different string theories?

Special relativity

M-theory

Quantum field theory

12 / 40

What does the "D" in D-brane stand for?

Dirichlet boundary conditions

Dimension

Density

13 / 40

What is the bulk in brane cosmology?

The higher-dimensional space in which branes exist

The surface of the brane

The volume of the brane

14 / 40

Who introduced the concept of D-branes?

Richard Feynman

Joseph Polchinski

Albert Einstein

15 / 40

How are branes detected in experiments?

Indirectly through their effects on particles

By their electromagnetic radiation

Direct observation

16 / 40

What is the significance of the Born-Infeld action in brane theory?

Describes the dynamics of D-branes

Measures the tension of branes

Describes string interactions

17 / 40

What is the tension of a brane?

Its velocity

A measure of its energy per unit volume

Its electric charge

18 / 40

What is the worldsheet in string theory?

The 3-dimensional volume of a brane

The surface of a brane

The 2-dimensional surface traced by a string in spacetime

19 / 40

What is a brane in string theory?

A classical wave

A multidimensional object

A point particle

20 / 40

What is the relationship between branes and extra dimensions?

Branes and extra dimensions are unrelated

Branes can exist in higher-dimensional spaces

Branes reduce the need for extra dimensions

21 / 40

What is the Hanany-Witten effect?

Movement of branes without interaction

Annihilation of branes

Creation of new branes when existing branes pass through each other

22 / 40

What is a fundamental property of branes in AdS/CFT correspondence?

They are point-like objects

They act as boundaries for strings

They exist only in flat spacetime

23 / 40

How do branes interact with each other?

Via strings stretched between them

By direct contact

They do not interact

24 / 40

How do D-branes contribute to the understanding of string theory?

By providing a way to include gauge theories

By eliminating the need for strings

By describing gravitational waves

25 / 40

How are branes classified?

By their mass

By their charge

By the number of spatial dimensions

26 / 40

What does a brane in a type IIA string theory represent?

A D-brane with even dimensions

A massless point particle

A D-brane with odd dimensions

27 / 40

What is the primary difference between a D-brane and an M-brane?

D-branes are in string theory, M-branes are in M-theory

D-branes have odd dimensions, M-branes have even dimensions

D-branes are massless, M-branes are not

28 / 40

In which theory are branes a fundamental object?

String theory

General relativity

Quantum electrodynamics

29 / 40

What is the significance of p in p-brane?

Charge of the brane

Number of spatial dimensions

Mass of the brane

30 / 40

What is the purpose of compactification in string theory?

To increase the number of dimensions

To eliminate the need for branes

To reduce extra dimensions to be consistent with observed physics

31 / 40

What is T-duality in string theory?

A symmetry that relates large and small compactified dimensions

A transformation between two branes

A property of point particles

32 / 40

What is a NS-brane?

A brane with negative tension

A brane with no charge

A brane associated with Neveu-Schwarz string sector

33 / 40

How does a 3-brane relate to our understanding of the universe?

It can represent our 3-dimensional space

It is a theoretical construct

It is a point particle

34 / 40

What does the term "brane tension" describe?

The energy density of the brane

The velocity of the brane

The charge of the brane

35 / 40

What is a 2-brane commonly referred to as?

Line

Surface

Membrane

36 / 40

Which brane configuration can lead to gauge symmetries in string theory?

Parallel branes

Intersecting branes

Perpendicular branes

37 / 40

What is the role of branes in the context of black holes?

They are unrelated to black holes

They are only theoretical constructs

They can describe black hole solutions

38 / 40

What does the term "brane-world scenario" refer to?

A universe without branes

A universe of only point particles

A model where our universe is a brane in higher-dimensional space

39 / 40

What is the holographic principle in the context of branes?

Describes how information in a volume can be represented on a lower-dimensional boundary

Describes branes with no charge

Describes branes moving faster than light

40 / 40

What is the relationship between branes and strings?

Branes and strings are unrelated

Branes are a type of string

Branes can have strings attached to them

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