GATE PH year:2023 PYQs & Answers — Page 2

Questions 11–20 of 65. Imported answers require independent review unless marked reviewed.

Topic practice 65 questionsPage 2 of 7

Which one of the following entropy (S) - temperature (T) diagrams CORRECTLY represents the Carnot cycle

shown in the

diagram?

Your answerChoose one option.

Diagram for Physics question 11 (figure 2)

Diagram for Physics question 11 (figure 3)

Diagram for Physics question 11 (figure 4)

Diagram for Physics question 11 (figure 5)

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Which one of the following is a dimensionless constant?

Your answerChoose one option.

Permittivity of free space

Permeability of free space

Bohr magneton

Fine structure constant

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Choose the most appropriate matching of the items in Column 1 with those in Column 2.

Column 1	Column 2
(i) PIN diode	P. Voltage regulation
(ii) Tunnel diode	Q. Radio frequency and microwave devices
(iii) Zener diode	R. Optoelectronic detection
(iv) Photo diode	S. Oscillator

Your answerChoose one option.

(i) - Q; (ii) - S; (iii) - P; (iv) - R

(i) - R; (ii) - Q; (iii) - P; (iv) - S

(i) - R; (ii) - S; (iii) - P; (iv) - Q

(i) - P; (ii) - Q; (iii) - R; (iv) - S

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The atomic number of an atom is 6. What is the spectroscopic notation of its ground state, according to Hund’s rules?

Your answerChoose one option.

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is the Hamiltonian,

the orbital angular momentum and

is the z-component of

. The

state of the hydrogen atom in the non-relativistic formalism is an eigen function of which one of the following sets of operators?

Your answerChoose one option.

and

only

and

only

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The Hall experiment is carried out with a non-magnetic semiconductor. The current

is along the

-axis and the magnetic field

is along the

-axis. Which one of the following is the CORRECT representation of the variation of the magnitude of the Hall resistivity

as a function of the magnetic field?

Your answerChoose one option.

Diagram for Physics question 16 (figure 2)

Diagram for Physics question 16 (figure 3)

Diagram for Physics question 16 (figure 4)

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Consider a two dimensional Cartesian coordinate system in which a rank 2 contravariant tensor is represented by the matrix

. The coordinate system is rotated anticlockwise by an acute angle

with the origin fixed. Which one of the following matrices represents the tensor in the new coordinate system?

Your answerChoose one option.

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A compound consists of three ions X, Y and Z. The Z ions are arranged in an FCC arrangement. The X ions occupy

of the tetrahedral voids and the Y ions occupy

of the octahedral voids. Which one of the following is the CORRECT chemical formula of the compound?

Your answerChoose one option.

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For a non-magnetic metal, which one of the following graphs best represents the behavior of

vs.

, where

is the heat capacity and

is the temperature?

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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For nonrelativistic electrons in a solid, different energy dispersion relations (with effective masses

, and

) are schematically shown in the plots. Which one of the following options is CORRECT?

Your answerChoose one option.

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GATE PH year:2023 PYQs

Question 11

Question 12

Question 13

Question 14

Question 15

Question 16

Question 17

Question 18

Question 19

Question 20