Nuclear and Particle Physics (CSIR Physical Sciences): Questions 9 - 13 of 13

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Question number: 9

» Nuclear and Particle Physics » Basic Nuclear Properties » Size

Appeared in Year: 2011

MCQ▾

Question

The radius of a Cu nucleus is measured to be 4.8×1013cm . The radius of a Mg nucleus can be estimated to be – (June)

Choices

Choice (4) Response

a.

2.86×1013cm

b.

5.2×1013cm

c.

3.6×1013cm

d.

8.6×1013cm

Passage

Consider the decay process τπ+ντ , in the rest frame of τ. The masses of τ,π and ντ and Mτ,Mπ are zero respectively. (June)

Question number: 10 (1 of 2 Based on Passage) Show Passage

» Nuclear and Particle Physics » Relativistic Kinematics

Appeared in Year: 2011

MCQ▾

Question

The velocity of π is –

Choices

Choice (4) Response

a.

MπcMr

b.

MrcMπ

c.

(Mr2+Mπ2)cMr2Mπ2

d.

(Mr2Mπ2)cMr2+Mπ2

Question number: 11 (2 of 2 Based on Passage) Show Passage

» Nuclear and Particle Physics » Relativistic Kinematics

Appeared in Year: 2011

MCQ▾

Question

The energy of π is

Choices

Choice (4) Response

a.

(MrMπ)c2

b.

(Mτ2Mπ2)c22Mτ

c.

MτMπc2

d.

(Mr2+Mπ2)c22Mτ

Passage

A beam of pions (π+) is incident on a proton target, giving rise to the process

π+pn+π++π+ (June)

Question number: 12 (1 of 2 Based on Passage) Show Passage

» Nuclear and Particle Physics » Elementary Particles and Quantum Numbers » Isospin

Appeared in Year: 2011

MCQ▾

Question

Assuming that the decay process through strong interactions, the total Isospin I and its third component I3 for the decay products, are –

Choices

Choice (4) Response

a.

I=52,I3=52

b.

I=52,I3=32

c.

I=32,I3=32

d.

I=12,I3=12

Question number: 13 (2 of 2 Based on Passage) Show Passage

» Nuclear and Particle Physics » Elementary Particles and Quantum Numbers » Isospin

Appeared in Year: 2011

MCQ▾

Question

Using Isospin symmetry, the cross – section for the above process can be related to that of the process –

Choices

Choice (4) Response

a.

π+npπ+π

b.

πnpππ

c.

π+p¯nπ+π

d.

πp¯n¯ππ

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