Free Printable NUCLEAR AND PARTICLE PHYSICS UNIT-5 ELEMENTARY PARTICLE

1.

Which of the following is a particle-antiparticle pair?

a)

Proton -- Positron

b)

Proton -- Neutron

c)

Neutron -- Neutrino

d)

Electron -- Positron

2.

If we ignore the sign, which of the following properties of particles and their corresponding antiparticle do NOT have the same size?

a)

Mass

b)

Charge

c)

Spin

d)

All of these have the same size

3.

What exchange particle holds the quarks together?

a)

Meson

b)

Gluons

c)

Photons

d)

Hadrons

4.

The strange baryon Σ⁺ has the quark structure

a)

uds

b)

uud

c)

uus

d)

udd

5.

Light is made up of what type of elementary particle?

a)

Quarks

b)

Leptons

c)

Photons

d)

All The Above

6.

What type of elementary particles are electrons?

a)

Quarks

b)

Leptons

c)

Photons

d)

Gluons

7.

How many quarks make up a proton?

a)

1

b)

0

c)

3

d)

2

8.

What particle is made up of two down quarks and one up quarks?

a)

Atom

b)

Electron

c)

Neutron

d)

Proton

9.

Which group particles do not feel the strong the forces?

a)

Positrons

b)

Leptons

c)

Hydrons

d)

Bosons

10.

How many quarks are there?

a)

2

b)

4

c)

3

d)

6

11.

The quark model was independently proposed by

a)

Andre Petermann

b)

Frederick soddy

c)

$MurreyGell-Mann$

d)

Ernest Lawrence

12.

All particles that have half-integral values are

a)

Fermions

b)

Bosons

c)

Gluons

d)

Mesons

13.

All particles that have integral values of spin are called

a)

Fermions

b)

Bosons

c)

Gluons

d)

Mesons

14.

The most commonly encountered mesons are

a)

π mesons

b)

K mesons

c)

π and K mesons

d)

None Of The Above

15.

The original form of the Gell-Mann–Nishijima formula is

a)

$Q=I3+3/2(B+S)$

b)

$Q=I3+1/2(B+S)$

c)

$Q=I3±1/2(B+S)$

d)

$Q=I3±1/2(B+S$

16.

Find which one is suitable for baryon Σ⁺

a)

Singlet

b)

Doublet

c)

Triplet

d)

Zero

17.

Find which one is continuous symmetry operation

a)

Rotations

b)

Parity

c)

Charge conjucation

d)

Time reversal

18.

$Basedontheparity(P),strangeness(S),isospin(I)andthirdcomponentofisospin(I3)conservationLawfindwhichinteractiontakeplaceforthereaction\ π^-+P→∧^0+K^{\ 0}$

a)

Strong

b)

Weak

c)

Electromagnetic

d)

Gravitational

19.

$Basedontheparity(P),strangeness(S),isospin(I)andthirdcomponentofisospin(I3)conservationLawfindwhichinteractiontakeplaceforthereactionπ^-+P→n+π^0$

a)

Strong

b)

Weak

c)

Electromagnetic

d)

Gravitational

20.

SU(3) symmetry schemes are

a)

Two fold

b)

Four Fold

c)

Six Fold

d)

Eight Fold

21.

Find which One is discrete symmetry operations

a)

Rotation

b)

Inversion

c)

Parity

d)

Translation

22.

$Why\ this\ \ \ π^-+n→K^0+K^+reaction\ is\ not\ conserved$

a)

Charge Number (Q) not conserved

b)

Baryon(B) number conserved

c)

Baryon(B) number, Strangeness(S) and I3 is Conserved

d)

Baryon(B) number, Strangeness(S) and I3 is not Conserved

23.

Hadrons and anti-hadrons are

a)

Colorless

b)

Red

c)

Yellow

d)

Blue

24.

The Field particle for weak interaction is

a)

Gluons

b)

Photons

c)

Intermediate bosons

d)

Gravitons

25.

A positron and its antiparticle, the electron, can annihilate each other and produce

a)

High-Energy Photons

b)

Protons And Antiprotons

c)

Green Electrons And Anti-Green Electrons

d)

Quarks And Antiquarks

NUCLEAR AND PARTICLE PHYSICS UNIT-5 ELEMENTARY PARTICLE

Total questions: 25

Worksheet time: 1hrs 15mins

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