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

What is a 2-brane commonly referred to as?

Membrane

Line

Surface

2 / 40

What is a NS-brane?

A brane associated with Neveu-Schwarz string sector

A brane with negative tension

A brane with no charge

3 / 40

What is the significance of p in p-brane?

Mass of the brane

Charge of the brane

Number of spatial dimensions

4 / 40

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

Describes string interactions

Measures the tension of branes

Describes the dynamics of D-branes

5 / 40

What is the tension of a brane?

Its velocity

A measure of its energy per unit volume

Its electric charge

6 / 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

7 / 40

What is the relationship between branes and strings?

Branes are a type of string

Branes and strings are unrelated

Branes can have strings attached to them

8 / 40

In which theory are branes a fundamental object?

String theory

Quantum electrodynamics

General relativity

9 / 40

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

The influence of branes on the expansion of the universe

The temperature of the brane

The speed of brane movement

10 / 40

What is the worldvolume of a brane?

Its energy

Its mass

The spacetime region it occupies

11 / 40

What is the worldsheet in string theory?

The 2-dimensional surface traced by a string in spacetime

The surface of a brane

The 3-dimensional volume of a brane

12 / 40

What is meant by "brane gas cosmology"?

A model with only strings

A model without branes

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

13 / 40

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

They provide boundary conditions for open strings

They represent elementary particles

They describe closed strings

14 / 40

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

Dirichlet boundary conditions

Dimension

Density

15 / 40

What does the term "brane tension" describe?

The energy density of the brane

The charge of the brane

The velocity of the brane

16 / 40

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

Perpendicular branes

Intersecting branes

Parallel branes

17 / 40

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

They are point-like objects

They exist only in flat spacetime

They act as boundaries for strings

18 / 40

What is the bulk in brane cosmology?

The volume of the brane

The higher-dimensional space in which branes exist

The surface of the brane

19 / 40

What theory unifies the five different string theories?

M-theory

Quantum field theory

Special relativity

20 / 40

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

They are unrelated to black holes

They can describe black hole solutions

They are only theoretical constructs

21 / 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

22 / 40

Which type of brane is associated with M-theory?

T-brane

M-brane

N-brane

23 / 40

Who introduced the concept of D-branes?

Richard Feynman

Joseph Polchinski

Albert Einstein

24 / 40

How do branes interact with each other?

They do not interact

Via strings stretched between them

By direct contact

25 / 40

How are branes classified?

By their charge

By their mass

By the number of spatial dimensions

26 / 40

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

By providing a way to include gauge theories

By describing gravitational waves

By eliminating the need for strings

27 / 40

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

String

Membrane

Point particle

28 / 40

How are branes detected in experiments?

Direct observation

Indirectly through their effects on particles

By their electromagnetic radiation

29 / 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

30 / 40

What is the Hanany-Witten effect?

Creation of new branes when existing branes pass through each other

Movement of branes without interaction

Annihilation of branes

31 / 40

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

D0-brane

D1-brane

D2-brane

32 / 40

What is a brane in string theory?

A multidimensional object

A point particle

A classical wave

33 / 40

What is the relationship between branes and extra dimensions?

Branes reduce the need for extra dimensions

Branes can exist in higher-dimensional spaces

Branes and extra dimensions are unrelated

34 / 40

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

Branes without extra dimensions

A single brane with warped extra dimensions

Multiple parallel universes

35 / 40

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

D0-brane

D1-brane

D2-brane

36 / 40

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

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

A universe without branes

A universe of only point particles

37 / 40

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

A massless point particle

A D-brane with even dimensions

A D-brane with odd dimensions

38 / 40

What is T-duality in string theory?

A property of point particles

A transformation between two branes

A symmetry that relates large and small compactified dimensions

39 / 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 are massless, M-branes are not

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

40 / 40

How can branes end?

On other branes

On point particles

They cannot end

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