GATE PH year:2023 PYQs & Answers — Page 3

Questions 21–30 of 65. Imported answers require independent review unless marked reviewed.

The figure schematically shows the

(magnetization) -

(magnetic field) plots for certain types of materials. Here

and

are plotted in the same scale and units. Which one of the following is the most appropriate combination?

Your answerChoose one option.

(Q) - Paramagnet; (R) - Type-I Superconductor; (S) - Antiferromagnet

(P) - Paramagnet; (Q) - Diamagnet; (R) - Type-I Superconductor

(P) - Paramagnet; (Q) - Antiferromagnet; (R) - Type-I Superconductor

(P) - Diamagnet; (R) - Paramagnet; (S) - Type-I Superconductor

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Graphene is a two dimensional material, in which carbon atoms are arranged in a honeycomb lattice with lattice constant

. As shown in the figure,

and

are two lattice vectors. Which one of the following is the area of the first Brillouin zone for this lattice?

Your answerChoose one option.

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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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Which one of the following options is CORRECT for the given logic circuit?

Your answerChoose one option.

P = 1, Q = 1; X = 0

P = 1, Q = 0; X = 1

P = 0, Q = 1; X = 0

P = 0, Q = 0; X = 1

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An atom with non-zero magnetic moment has an angular momentum of magnitude

. When a beam of such atoms is passed through a Stern-Gerlach apparatus, how many beams does it split into?

Your answerChoose one option.

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matrix

has the property

and

, where

is the

identity matrix. Which one of the following is the CORRECT set of eigen values of the matrix

Your answerChoose one option.

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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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Which of the following is(are) the CORRECT option(s) for the Joule-Thomson effect?

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

It is an isentropic process

It is an isenthalpic process

It can result in cooling as well as heating

For an ideal gas it always results in cooling

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The deuteron is a bound state of a neutron and a proton. Which of the following statements is(are) CORRECT?

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

The deuteron has a finite value of electric quadrupole moment due to non-spherical electronic charge distribution

The magnetic moment of the deuteron is equal to the sum of the magnetic moments of the neutron and the proton

The deuteron state is an admixture of

and

states

The deuteron state is an admixture of

and

states

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The Geiger-Muler counter is a device to detect

and

radiations. It is a cylindrical tube filled with monatomic gases like argon, and polyatomic gases such as ethyl alcohol. The inner electrode is along the axis of the cylindrical tube and the outer electrode is the tube. Which of the following statements is(are) CORRECT?

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

Argon is used so that ambient light coming from the surroundings do not produce any signal in the detector

Ethyl alcohol is used as a quenching gas

The electric field strength decreases from the axis to the edge of the tube and the direction of the field is radially outward

The electric field increases from the axis to the edge of the tube and the field direction is radially inward

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GATE PH year:2023 PYQs

Question 21

Question 22

Question 23

Question 24

Question 25

Question 26

Question 27

Question 28

Question 29

Question 30