Nuclear and Particle Physics-Beta Decay (GATE Physics): Questions 1 - 4 of 6

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Question number: 1

» Nuclear and Particle Physics » Beta Decay

Appeared in Year: 2014

MCQ▾

Question

A nucleus X undergoes a first forbidden βdecay to a nucleus Y . If the angular momentum (I) and parity (P) , denoted by IP as 72 for X , which of the following is a possible IP value for Y ?

Choices

Choice (4) Response

a.

32

b.

12+

c.

32+

d.

12

Question number: 2

» Nuclear and Particle Physics » Beta Decay

Appeared in Year: 2013

MCQ▾

Question

In the β decay process, the transition 2+3+ , is –

Choices

Choice (4) Response

a.

Allowed both by Fermi and Gamow – Teller selection rule

b.

Not allowed by Fermi but allowed by Gamow – Teller selection rule

c.

Not allowed both by Fermi and Gamow – Teller selection rule

d.

Allowed by Fermi and but not by Gamow – Teller selection rule

Question number: 3

» Nuclear and Particle Physics » Beta Decay

Appeared in Year: 2011

MCQ▾

Question

In the β decay of neutron np+e+ν¯e , the anti – neutrino ν¯e escapes detection. Its existence is inferred from the measurement of

Choices

Choice (4) Response

a.

Energy distribution of electrons

b.

Forward – backward asymmetry of electrons

c.

Angular distribution of electrons

d.

Helicity distribution of electrons

Question number: 4

» Nuclear and Particle Physics » Beta Decay

Appeared in Year: 2010

MCQ▾

Question

The basic process underlying the neutron β decay is –

Choices

Choice (4) Response

a.

su+e+ν¯e

b.

du+e+ν¯e

c.

ud+e+ν¯e

d.

du+e

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