GATE PH topic:nuclear-particle-physics PYQs & Answers

Questions 1–10 of 61. Imported answers require independent review unless marked reviewed.

Which one of the following is an allowed process?

Your answerChoose one option.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Given

is the electromagnetic charge and

is the strangeness quantum number, identify the particle(s) for which

is satisfied.

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

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Which one of the following statements is true?

Your answerChoose one option.

In the decay

, CPT is violated.

The decay

is allowed and strangeness is violated.

The decay

is allowed.

The decay

is allowed.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

particle moves towards a fixed nucleus carrying charge

, with initial speed

and impact parameter

. Starting from a large distance from the nucleus, its distance of closest approach is

and its speed there is

. Then which of the following options is/are correct? (

and

)

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

For

ignoring higher order corrections in

For

ignoring higher order corrections in

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Which one of the following baryons has strangeness quantum number

Your answerChoose one option.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The nuclear energy levels of mirror nuclei are similar. Using this empirical fact alone, the nuclear force can be said to be independent of which one of the following properties of the nucleons?

Your answerChoose one option.

Mass

Spin

Charge

Parity

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Which of the following consideration(s) is/are shown that nuclear beta decay,

, has to be a three-body decay?

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

Continuous distribution of the electron energy

Spin of the final state

Mass of the electron

Mass of the proton

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Nuclear radiation emitted from a

radioactive source is detected by a photomultiplier tube (PMT) coupled to a scintillator crystal. Which of the following option(s) is/are correct?

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

radiation from

will directly hit the photocathode of the PMT without interacting with the scintillator crystal and produce a signal

radiation from

source interacts with the scintillator crystal, producing

radiation, which will hit the photocathode of the PMT and produce a signal

A mu-metal shield is put all around the PMT to nullify the effect of external electric fields

A mu-metal shield is put all around the PMT to nullify the effect of external magnetic fields

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The

baryon with spin

, at rest, decays to a proton and a pion (

). The

has positive intrinsic parity and

has negative intrinsic parity. The orbital angular momentum of the proton-pion system (in integer) is _____

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Two projectile protons

and

both with spin up (along the +

direction) are scattered from another fixed target proton

with spin up at rest in the

plane, as shown in the figure. They scatter one at a time. The nuclear interaction potential between both the projectiles and the target proton is

, where

is the orbital angular momentum of the system with respect to the target,

is the spin angular momentum of the system and

is a negative constant in appropriate units. Which one of the following is correct?

Your answerChoose one option.

will be scattered in the +

direction (upward) and

will be scattered in the −

direction (downward)

will be scattered in the +

direction (upward) and

will be scattered in the +

direction (upward)

will be scattered in the −

direction (downward) and

will be scattered in the +

direction (upward)

will be scattered in the −

direction (downward) and

will be scattered in the −

direction (downward)

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

GATE PH topic:nuclear-particle-physics PYQs

How to practice topic:nuclear-particle-physics

Question 23

Question 24

Question 38

Question 56

Question 18

Question 20

Question 27

Question 29

Question 35

Question 39