CUET Sample Paper for Physics

CUET UG
ENTRANCE
SAMPLE PAPER
2023
SAMPLE PAPERS • PRACTICE
QUESTION PAPERS • YEAR 2023 •
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2023 JUNE
MAY 2023

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CUET 2023 Overview

CUET is a Common entrance exam. The full form of CUET is Common University Entrance Test. It
is organized by National Testing Agency at a National level. It is organized by National Testing
Agency as a National level exam in India for admission in All Central Universities, and State, Deemed,
Private Universities accepting CUET scores.

Highlights of the examination are as follows.

Aspects Details

Name of Exam CUET 2023

Full Form of CUET Common University Entrance Test

Organizing Body NTA

Full Form of NTA National Testing Agency

Type of Exam Common Entrance Exam

Level of Exam National

Region India

Official Website cuet.samarth.ac.in

Courses Where BA, BCA, B.Sc, B.Com, BJMC, B.Pharm, D.Pharm, B.Tech, B.Voc, BVA,
Admission is Through BFA, BPA, BSW, Integrated MA Integrated B.Ed, Integrated M.Sc,
CUET Integrated B.Tech-M.Tech, Integrated MPA, BA LLB, BBA LLB, Diploma,
Shastri,

Colleges Where All Central Universities, and State, Deemed, Private Universities acepting
Admission is Through CUET scores
CUET

Minimum Educational Class 12th
Qualification

Mode of Exam Computer Based Test-CBT

Type of Questions Objective type with Multiple Choice Questions

Marking Scheme +5, -1

CUET 2023 Exam Pattern

The exam pattern is as follows

▪ Mode of Exam – The exam is a Computer Based Test-CBT.
▪ Question type – The questions are Objective type with Multiple Choice Questions.
▪ Number of Subjects – A candidate can choose upto 10 Subjects for giving the Exam.
▪ Language of Question Paper – The question paper is in 13 languages (Assamese, Bengali,
English, Gujarati, Hindi, Kannada, Malayalam, Marathi, Punjabi, Odia, Tamil, Telugu, and
Urdu).

Marking Scheme –
▪ Candidates get +5 marks for correct answer.
▪ And negative marks is -1 for incorrect answers

List of Languages/ Domain Specific Subjects /General Test offered under CUET (UG)-2023

Sample Paper
Physics

Q.No. 1 An electron is moving with an initial velocity v= V₀î and is in a magnetic field B = B₀ĵ. Then it’s de
Broglie wavelength

(A) remains constant.

(B) increases with time.

(C) decreases with time.

(D) increases and decreases periodically.

Q.No. 2 The output of a step-down transformer is measured to be 24 V when connected to a 12 watt light
bulb. The value of the peak current is

(A) 1/√2A

(B) √2A

(C) 2 A.

(D) 2√2A

Q.No. 3 The Electric flux through the surface

(A) in Fig. (iv) is the largest

(B) in Fig. (iii) is the least

(C) in Fig. (ii) is same as Fig. (iii) but is smaller than Fig. (iv)

(D) is the same for all the figures

Q.No. 4 Consider the two idealized systems: (i) a parallel plate capacitor with large plates and small
separation and (ii) a long solenoid of length L >> R, radius of cross-section. In (i) E⃗ is ideally treated as a
constant between plates and zero outside. In (ii) magnetic field is constant inside the solenoid and zero
outside. These idealised assumptions, however, contradict fundamental laws as below:

(A) case (i) contradicts Gauss’s law for electrostatic fields.

(B) case (ii) contradicts Gauss’s law for magnetic fields.

(C) case (i) agrees with ∮E⃗.dl⃗ = 0
---

(D) case (ii) contradicts ∮H⃗.dl⃗ = lm

Q.No. 5 A circular current loop of magnetic moment M is in an arbitrary orientation in an external magnetic
field B. The work done to rotate the loop by 30° about an axis perpendicular to its plane is
(A) MB.

(B) √3 MB

2

(C) MB

2

(D) zero.

Q.No. 6 A 1 KW signal is transmitted using a communication channel which provides attenuation at the rate
of – 2dB per km. If the communication channel has a total length of 5 km, the power of the signal received is
[gain in dB = 10 log ( ) ]
P0

Pi

(A) 900 W

(B) 100 W

(C) 990 W

(D) 1010 W

Q.No. 7 When a nucleus in an atom undergoes a radioactive decay, the electronic energy levels of the atom

(A) do not change for any type of radioactivity .

(B) change for α and β radioactivity but not for γ-radioactivity.

(C) change for α-radioactivity but not for others.

(D) change for β-radioactivity but not for others.

Q.No. 8 The binding energy of a H-atom, considering an electron moving around a fixed nuclei (proton), is
4

B = −
me
2
(m = electron mass). If one decides to work in a frame of reference where the electron is at
8n ε h
2 2
0

rest, the proton would be moving arround it. By similar
arguments, the binding energy would be B = − (M = proton mass)
4
Me
2 2 2
8n ε h
0

This last expression is not correct because

(A) n would not be integral.

(B) Bohr-quantisation applies only to electron

(C) the frame in which the electron is at rest is not inertial.

(D) the motion of the proton would not be in circular orbits, even approximately.

Q.No. 9 A toroid of n turns, mean radius R and cross-sectional radius a carries current I. It is placed on a
horizontal table taken as x-y plane. Its magnetic moment m

(A) is non-zero and points in the z-direction by symmetry.

(B) points along the axis of the tortoid (m = m\boldsymbolϕ)
^

(C) is zero, otherwise there would be a field falling as 1

r
3
at large distances outside the toroid.
---

(D) is pointing radially outwards.

Q.No. 10 The radius of curvature of the curved surface of a plano-convex lens is 20 cm. If the refractive
index of the material of the lens be 1.5, it will
(A) act as a convex lens only for the objects that lie on its curved side.

(B) act as a concave lens for the objects that lie on its curved side.

(C) act as a convex lens irrespective of the side on which the object lies.

(D) act as a concave lens irrespective of side on which the object lies.

Q.No. 11 Five charges q1, q2, q3, q4, and q5 are fixed at their positions as shown in Figure. S is a Gaussian
surface. The Gauss’s law is given by
q
∮ E ⋅ ds =
S ε0

Which of the following statements is correct?

(A) E on the LHS of the above equation will have a contribution from q1, q5 and q3 while q on the RHS will
have a contribution from q2 and q4 only

(B) E on the LHS of the above equation will have a contribution from all charges while q on the RHS will
have a contribution from q2 and q4 only.

(C) E on the LHS of the above equation will have a contribution from all charges while q on the RHS will
have a contribution from q1, q3 and q5 only.

(D) Both E on the LHS and q on the RHS will have contributions from q2 and q4 only.

Q.No. 12 Which of the following characteristics of electrons determines the current in a conductor?

(A) Drift velocity alone.

(B) Thermal velocity alone.

(C) Both drift velocity and thermal velocity.

(D) Neither drift nor thermal velocity.

Q.No. 13 The gravitational force between a H-atom and another particle of F = G M ⋅m

r
2
mass m will be
given by Newton’s law:
where r is in km and

(A) M = m proton + m electron

(B) M = m proton + m electron −
B

c
2 (B = 13.6eV)

(C) M is not related to the mass of the hydrogen atom.
---

(D) M = m | V | = magnitude of the potential energy of electron in the H-atom).
|V |
proton
+ m electron − 2
c

Q.No. 14 A particle is dropped from a height H. The de Broglie wavelength of the particle as a function of
height is proportional to
(A) H

(B) H 1/2

(C) H 0

(D) H −1/2

Q.No. 15 The simple Bohr model cannot be directly applied to calculate the energy levels of an atom with
many electrons. This is because :

(A) of the electrons not being subject to a central force

(B) of the electrons colliding with each other

(C) of screening effects

(D) the force between the nucleus and an electron will no longer be given by Coulomb’s law.

Q.No. 16 Light with an energy flux of 20W/cm falls on a non-reflecting surface at normal incidence. If the
2

surface has an area of 30 cm 2 . the total momentum delivered (for complete absorption) during 30 minutes
is

(A) 36 × 10 −5
kgm/s

(B) 36 × 10 −4
kgm/s

(C) 108 × 10 kgm/s 4

(D) 1.08 × 10 kgm/s 7

Q.No. 17 A current carrying circular loop of radius R is placed in the x-y plane with centre at the origin. Half
of the loop with x > 0 is now bent so that it now lies in the y-z plane.

(A) The magnitude of magnetic moment now diminishes.

(B) The magnetic moment does not change.

(C) The magnitude of B at (0.0.z), z >> R increases.

(D) The magnitude of B at (0.0.z), z >> R is unchanged.

Q.No. 18 A paramagnetic sample shows a net magnetisation of 8Am when placed in an external magnetic
−1

field of 0.6T at a temperature of 4K. When the same sample is placed in an external magnetic field of 0.2 T
at a temperature of 16 K, the magnetisation will be

(A) 32

3
Am
−1

(B) 2

3
Am
−1

(C) 6Am −1

(D) 2.4Am −1
---

Q.No. 19 An electron (mass m ) with an initial velocity v = v ^i (v > 0) is in an electric field
0 0

E = −E ^ i (E = constant > 0) . It’s de Broglie wavelength at time t is given by
0 0

(A) λ0
eE
0 t CUET 2023
(1+ )
m v
0

(B) λ (1 +
0
eE 0 t

mw 0
)

(C) λ 0

(D) λ t 0

Q.No. 20 I-V characteristics of four devices are shown in Figure

Identify devices that can be used for modulation:

(A) ‘i’ and ‘iii’

(B) only ‘iii’

(C) ‘ii’ and some regions of ‘iv’

(D) All the devices can be used

Q.No. 21 Two charged particles traverse identical helical paths in a completely opposite sense in a uniform
magnetic field B = B k
^
0

(A) They have equal z-components of momenta.

(B) They must have equal charges.

(C) They necessarily represent a particle-antiparticle pair.

(D) The charge to mass ratio satisfy : ( e

m
)
1
+ (
e

m
)
2
= 0

Q.No. 22 Hole is

(A) an anti-particle of electron

(B) a vacancy created when an electron leaves a covalent bond.

(C) absence of free electrons.
---

(D) an artifically created particle.

Q.No. 23 A parallel plate capacitor is made of two dielectric blocks in series. One of the blocks has thickness
d1 and dielectric constant k1 and the other has thickness d2 and dielectric constant k2 as shown in Fig. 2.3.
This arrangement can be thought as a dielectric slab of thickness d =(d1+d2) and effective dielectric constant
k. The k is

(A) k 1 d 1 +k 2 d 2

d 1 +d 2

(B) k 1 d 1 +k 2 d 2

k 1 +k 2

k 1 k 2 (d 1 +d 2 )
(C) (k 1 d 1 +k 2 d 2 )

(D) 2k 1 k 2

k 1 +k 2

Q.No. 24 The direction of ray of light incident on a concave mirror is shown by PQ while directions in which
the ray would travel after reflection is shown by four rays marked 1, 2, 3 and 4 (see figure). Which of the
four rays correctly shows the direction of reflected ray ?

(A) 1

(B) 2

(C) 3

(D) 4

Q.No. 25 There are certain material developed in laboratories which have a negative refractive index

(Figure). A ray incident from air (medium 1) into such a medium (medium 2) shall follow a path given by :

(A)
---

(B) CUET 2023

(C)

(D)

Q.No. 26 Equipotentials at a great distance from a collection of charges whose total sum is not zero are
approximately

(A) spheres.

(B) planes.

(C) paraboloids

(D) ellipsoids.

Q.No. 27 A loop, made of straight edges has six corners at A(0,0,0), B(L,O,0) C(L,L,0), D(0,L,0) E(0,L,L)
and F(0,0,L). A magnetic field B = \boldsymbolB (i + k)T is present in the region. The flux passing
o

through the loop ABCDEFA (in that order) is

(A) B L Wb
o
2

(B) 2B L Wb
0
2

(C) √2B L Wb o
2

(D) 4B L Wb
o
2

Q.No. 28 Three waves A, B and C of frequencies 1600 kHz, 5 MHz and 60 MHz, respectively are to be
transmitted from one place to another. Which of the following is the most appropriate mode of
communication:

(A) A is transmitted via space wave while B and C are transmitted via sky wave.

(B) A is transmitted via ground wave, B via sky wave and C via space wave.

(C) B and C are transmitted via ground wave while A is transmitted via sky wave.

(D) B is transmitted via ground wave while A and C are transmitted via space wave.

Q.No. 29 Identify the mathematical expression for amplitude modulated wave:

(A) A sin [{ω + k v
c c 1 m
(t)}t + ϕ]

(B) A sin {ω t + ϕ + k v
c c 2 m
(t)}

(C) {A + k v
c 2 m
(t)} sin (ω c t + ϕ)
---

(D) A v
c m (t) sin (ω c t + ϕ)

Q.No. 30 A point charge +q, is placed at a distance d from an isolated conducting plane. The field at a point P
on the other side of the plane is
(A) directed perpendicular to the plane and away from the plane.

(B) directed perpendicular to the plane but towards the plane.

(C) directed radially away from the point charge.

(D) directed radially towards the point charge.

Q.No. 31 Consider sunlight incident on a slit of width 10 A. The image seen through the slit shall
4

(A) be a fine sharp slit white in colour at the center.

(B) a bright slit white at the center diffusing to zero intensities at the edges.

(C) a bright slit white at the center diffusing to regions of different colours.

(D) only be a diffused slit white in colour.

Q.No. 32 Tritium is an isotope of hydrogen whose nucleus Triton contains 2 neutrons and 1 proton. Free
neutrons decay into p + e + ν . If one of the neutrons in Triton decays, it would transform into He³ nucleus.
This does not happen. This is because

(A) Triton energy is less than that of a He³ nucleus.

(B) the electron created in the beta decay process cannot remain in the nucleus.

(C) both the neutrons in triton have to decay simultaneously resulting in a nucleus with 3 protons, which is
not a He 3 nucleus.

(D) because free neutrons decay due to external perturbations which is absent in a triton nucleus.

Q.No. 33 The figure shows some equipotential lines distributed in space. A charged object is moved from

point A to point B.

(A) The work done in Fig. (i) is the greatest.

(B) The work done in Fig. (ii) is least.

(C) The work done is the same in Fig. (i), Fig. (ii) and Fig. (iii).

(D) The work done in Fig. (iii) is greater than Fig. (ii)but equal to that in Fig. (i).

Q.No. 34 To reduce the resonant frequency in an L-C-R series circuit with a generator
---

(A) the generator frequency should be reduced.

(B) another capacitor should be added in parallel to the first.

(C) the iron core of the inductor should be removed.

(D) dielectric in the capacitor should be removed.

Q.No. 35 Truth table for the given circuit (Figure) is

(A)

(B)

(C)

(D)

Q.No. 36 A 220 V A.C. supply is connected between points A and B (Figure). What will be the potential
difference V across the capacitor?

(A) 220 V

(B) 110 V

(C) 0 V
---

(D) 220√2V

Q.No. 37 Two H atoms in the ground state collide inelastically. The maximum amount by which their
combined kinetic energy is reduced is
(A) 10.20 eV

(B) 20.40 eV

(C) 13.6 eV

(D) 27.2 eV

Q.No. 38 Biot-Savart law indicates that the moving electrons (velocity v) produce a magnetic field B such
that

(A) B ⊥ V.

(B) B || V.

(C) it obeys inverse cube law.

(D) it is along the line joining the electron and point of observation.

Q.No. 39 Which of the following combinations should be selected for better tuning of an LCR circuit used
for communication?

(A) R = 20 Ω, L = 1.5 H, C = 35μF.

(B) R = 25 Ω, L = 2.5 H, C = 45μF.

(C) R = 15 Ω, L = 3.5 H, C = 30μF

(D) R = 25 Ω, L = 1.5 H, C = 45μF.

Q.No. 40 In a nuclear reactor, moderators slow down the neutrons which come out in a fission process. The
moderator used have light nuclei. Heavy nuclei will not serve the purpose because

(A) they will break up.

(B) elastic collision of neutrons with heavy nuclei will not slow them down.

(C) the net weight of the reactor would be unbearably high.

(D) substances with heavy nuclei do not occur in liquid or gaseous state at room temperature.

Answer Sheet

Q.No Answer
Q.No. 1 (A)
Q.No. 2 (A)
Q.No. 3 (D)
Q.No. 4 (B)
Q.No. 5 (D)
---

Q.No. 6 (B)
Q.No. 7 (B)
Q.No. 8 (C)
Q.No. 9 (C)
Q.No. 10 (C)
Q.No. 11 (B)
Q.No. 12 (A)
Q.No. 13 (B)
Q.No. 14 (D)
Q.No. 15 (A)
Q.No. 16 (B)
Q.No. 17 (A)
Q.No. 18 (B)
Q.No. 19 (A)
Q.No. 20 (C)
Q.No. 21 (D)
Q.No. 22 (B)
Q.No. 23 (C)
Q.No. 24 (B)
Q.No. 25 (A)
Q.No. 26 (A)
Q.No. 27 (B)
Q.No. 28 (B)
Q.No. 29 (C)
Q.No. 30 (A)
Q.No. 31 (A)
Q.No. 32 (A)
Q.No. 33 (C)
Q.No. 34 (B)
Q.No. 35 (C)
Q.No. 36 (D)

Q.No. 37 (A)
Q.No. 38 (A)
Q.No. 39 (C)
Q.No. 40 (B)
---