GATE PH Nuclear and Particle Physics PYQs & Answers — Page 2

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Questions 11–20 of 61. Imported answers require independent review unless marked reviewed.

Topic practice 61 questionsPage 2 of 7

Consider two hypothetical nuclei

and

undergoing

decay, resulting in nuclei

and

, respectively. The decay scheme and the corresponding

values of the nuclei are given in the figure. Which of the following option(s) is/are correct? (

is the total angular momentum and

is parity)

Your answerSelect all correct options. You can choose more than one.

is Fermi transition and

is Fermi transition

is Fermi transition and

is Gamow-Teller transition

is Gamow-Teller transition and

is Fermi transition

is Gamow-Teller transition and

is Gamow-Teller transition

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Cyclotrons are used to accelerate ions like deuterons (

) and

particles. Keeping the magnetic field same for both,

and

are extracted with energies 10 MeV and 20 MeV with extraction radii

and

, respectively. Taking the masses

and

, the value of

(in integer) is ______

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Consider the induced nuclear fission reaction

where neutron momenta in both initial and final states are negligible. The ratio of the kinetic energies (KE) of the daughter nuclei,

is __________

Your answerChoose one option.

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Let

and

, respectively, denote number and kinetic energy of electrons produced in a nuclear beta decay. Which one of the following distributions is correct?

Your answerChoose one option.

Diagram for Physics question 19 (figure 2)

Diagram for Physics question 19 (figure 3)

Diagram for Physics question 19 (figure 4)

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Let P, Q and R be three different nuclei. Which one of the following nuclear processes is possible?

Your answerChoose one option.

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Binding energy and rest mass energy of a two-nucleon bound state are denoted by

and

, respectively, where

is the speed of light. The minimum energy of a photon required to dissociate the bound state is

Your answerChoose one option.

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Decays of mesons and baryons can be categorized as weak, strong and electromagnetic decays depending upon the interactions involved in the processes. Which of the following option is/are true?

Your answerSelect all correct options. You can choose more than one.

is a weak decay

is an electromagnetic decay

is a weak decay

is a strong decay

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According to the nuclear shell model, the absolute value of the difference in magnetic moments of

and

, in the units of nuclear magneton (

) is

. The magnitude of

is _____ (in integer).

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nucleus emits a

-particle and is converted to

with

, which in turn decays to the

ground state with

by emitting two photons in succession, as shown in the figure. Which one of the following statements is CORRECT?

Your answerChoose one option.

is an electric octupole transition

is a magnetic quadrupole transition

is an electric quadrupole transition

is a magnetic quadrupole transition

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The

particle is a member of the Baryon decuplet with isospin state

and strangeness quantum number

. In the quark model, which one of the following is the flavour part of the

wavefunction?

Your answerChoose one option.

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GATE PH Nuclear and Particle Physics PYQs

Question 48

Question 59

Question 17

Question 19

Question 26

Question 36

Question 49

Question 65

Question 23

Question 27