CUET Physics Question Paper 2024(Available} : Download Set C Question paper with Answers PDF

A metal wire is subjected to a constant potential difference. When the temperature of the metal wire increases, the drift velocity of the electron in it ____________.

1. (1) increases, thermal velocity of the electrons decreases
2. (2) decreases, thermal velocity of the electrons decreases
3. (3) increases, thermal velocity of the electrons increases
4. (4) decreases, thermal velocity of the electrons increases

Question 5:

For the given mixed combination of resistors, calculate the total resistance between points A and B.

1. (1) 9 Ω
2. (2) 18 Ω
3. (3) 4 Ω
4. (4) 14 Ω

Correct Answer: (1) 9 Ω
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Radiation of frequency 2v₀ is incident on a metal with threshold frequency v₀. The correct statement of the following is _______________________.

1. (1) No photoelectrons will be emitted
2. (2) All photoelectrons emitted will have kinetic energy equal to hν₀
3. (3) Maximum kinetic energy of photoelectrons emitted can be hν₀
4. (4) Maximum kinetic energy of photoelectrons emitted will be 2hν₀

Question 11:

A square loop with each side 1 cm, carrying a current of 10 A, is placed in a magnetic field of 0.2 T. The direction of magnetic field is parallel to the plane of the loop. The torque experienced by the loop is _____.

1. (1) zero
2. (2) 2 × 10⁻⁴ Nm
3. (3) 2 × 10⁻² Nm
4. (4) 2 Nm

Correct Answer: (1) zero
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Question 12:

In an ac circuit, the current leads the voltage by π/2. The circuit is __________________.

1. (1) purely resistive
2. (2) should have circuit elements with resistance equal to reactance
3. (3) purely inductive
4. (4) purely capacitive

Correct Answer: (4) purely capacitive
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Question 13:

In a pair of adjacent coils, for a change of current in one of the coils from 0 A to 10 A in 0.25 s, the magnetic flux in the adjacent coil changes by 15 Wb. The mutual inductance of the coils is _____________.

1. (1) 120 H
2. (2) 12 H
3. (3) 1.5 H
4. (4) 0.75 H

Correct Answer: (3) 1.5 H
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Question 14:

A wire of irregular shape in figure (a) and a circular loop of wire in figure (b) are placed in different uniform magnetic fields as shown in the figures below. In figure (a), the magnetic field is perpendicular into the plane. In figure (b), the magnetic field is perpendicular out of the plane.
The wire in figure (a) is turning into a circular loop and that in figure (b) into a narrow straight wire. The direction of induced current will be ________________.

1. (1) clockwise in both (a) and (b)
2. (2) anticlockwise in both (a) and (b)
3. (3) clockwise in (a) and anticlockwise in (b)
4. (4) anticlockwise in (a) and clockwise in (b)

Correct Answer: (4) anticlockwise in (a) and clockwise in (b)
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Question 15:

Match List-I with List-II. The four graphs show the variation of opposition to the flow of AC versus frequency with circuit characteristics:

List-I

(A) Impedance
(B) Capacitive reactance
(C) Inductive reactance
(D) Resistance

List-II

(I) Impedance
(II) Capacitive reactance
(III) Inductive reactance
(IV) Resistance

1. (1) (A) - (I), (B) - (II), (C) - (III), (D) - (IV)
2. (2) (A) - (IV), (B) - (III), (C) - (II), (D) - (I)
3. (3) (A) - (I), (B) - (II), (C) - (IV), (D) - (III)
4. (4) (A) - (III), (B) - (IV), (C) - (I), (D) - (II)

Correct Answer: (1) (A) - (I), (B) - (II), (C) - (III), (D) - (IV)
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Question 16:

In an electromagnetic wave, the ratio of energy densities of electric and magnetic fields is ____________.

1. (1) 1 : 1
2. (2) 1 : c
3. (3) c : 1
4. (4) 1 : c²

Correct Answer: (1) 1 : 1
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Question 15:

A cell of emf 1.1 V and internal resistance 0.5 Ω is connected to a wire of resistance 0.5 Ω. Another cell of the same emf is now connected in series with the intention of increasing the current but the current in the wire remains the same. The internal resistance of the second cell is ___________.

1. (1) 1 Ω
2. (2) 2.5 Ω
3. (3) 1.5 Ω
4. (4) 2 Ω

Correct Answer: (3) 1.5 Ω
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Question 16:

P, Q, R and S are four wires of resistances 3, 3, 3 and 4 Ω respectively. They are connected to form the four arms of a Wheatstone bridge circuit. The resistance with which S must be shunted in order that the bridge may be balanced is ____________.

1. (1) 14 Ω
2. (2) 12 Ω
3. (3) 15 Ω
4. (4) 7 Ω

Correct Answer: (3) 15 Ω
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Question 17:

Magnetic moment of a thin bar magnet is 'M'. If it is bent into a semicircular form, its new magnetic moment will be _______________.

1. (1) M/π
2. (2) M/2
3. (3) M
4. (4) 2M/π

Correct Answer: (1) M/π
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Question 18:

Ferromagnetic material used in Transformers must have ______________.

1. (1) Low permeability and High Hysteresis loss
2. (2) High permeability and Low Hysteresis loss
3. (3) High permeability and High Hysteresis loss
4. (4) Low permeability and Low Hysteresis loss

Correct Answer: (2) High permeability and Low Hysteresis loss
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Question 19:

A conducting ring of radius r is placed in a varying magnetic field perpendicular to the plane of the ring. If the rate at which the magnetic field varies is x, the electric field intensity at any point of the ring is _____________.

1. (1) rx
2. (2) rx/2
3. (3) 2rx
4. (4) 4r/x

Correct Answer: (1) rx
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Question 20:

A 50 Hz ac current of crest value 1 A flows through the primary of a transformer. If the mutual inductance between the primary and secondary be 0.5 H, the crest voltage induced in the secondary is ____________.

1. (1) 75 V
2. (2) 150 V
3. (3) 100 V
4. (4) 200 V

Correct Answer: (3) 100 V
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Question 21:

A long solenoid of diameter 0.1 m has 2 × 10⁴ turns per meter. At the centre of the solenoid a coil of 100 turns and radius 0.01 m is placed with its axis coinciding with the solenoid axis. The current in the solenoid reduces at a constant rate to 0 A from 4 A in 0.05 s. If the resistance of the coil is 10π² Ω, then the total charge flowing through the coil during this time is ___________.

1. (1) 16 μC
2. (2) 32 μC
3. (3) 16π μC
4. (4) 32π μC

Correct Answer: (3) 16π μC
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Question 22:

Lower half of a convex lens is made opaque. Which of the following statement describes the image of the object placed in front of the lens?

1. (1) No change in image
2. (2) Image will show only half of the object
3. (3) Intensity of image gets reduced
4. (4) (2) and (3) only

Correct Answer: (4) (2) and (3) only
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Question 23:

Two slits are made 0.1 mm apart and the screen is placed 2 m away. The fringe separation when a light of wavelength 500 nm is used is ____________.

1. (1) 1 cm
2. (2) 0.15 cm
3. (3) 1.5 cm
4. (4) 0.1 cm

Correct Answer: (2) 0.15 cm
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Question 24:

For an astronomical telescope having objective lens of focal length 10 m and eyepiece lens of focal length 10 cm, the telescope's tube length and magnification respectively are ____________.

1. (1) 20 cm, 1
2. (2) 1000 cm, 1
3. (3) 1010 cm, 1
4. (4) 1010 cm, 100

Correct Answer: (3) 1010 cm, 1
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Question 25:

According to Bohr's Model:
(A) The radius of the orbiting electron is directly proportional to 'n'.
(B) The speed of the orbiting electron is directly proportional to '1/n'.
(C) The magnitude of the total energy of the orbiting electron is directly proportional to '1/n²'.
(D) The radius of the orbiting electron is directly proportional to 'n²'.

1. (1) (A), (B) and (C) only
2. (2) (A), (B) and (D) only
3. (3) (A), (B), (C) and (D)
4. (4) (B), (C) and (D) only

Correct Answer: (1) (A), (B) and (C) only
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Question 26:

For a full wave rectifier, if the input frequency is 50 Hz, the output frequency will be ___________.

1. (1) 50 Hz
2. (2) 100 Hz
3. (3) 25 Hz
4. (4) 0 Hz

Correct Answer: (2) 100 Hz
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Question 27:

For an electric dipole in a non-uniform electric field with dipole moment parallel to the direction of the field, the force F and torque τ on the dipole respectively are ____________.

1. (1) F = 0, τ = 0
2. (2) F ≠ 0, τ = 0
3. (3) F = 0, τ ≠ 0
4. (4) F ≠ 0, τ ≠ 0

Correct Answer: (3) F = 0, τ ≠ 0
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Question 28:

Two large plane parallel sheets shown in the figure have equal but opposite surface charge densities + σ and – σ. A point charge q placed at points P1, P2 and P3 experiences forces F1, F2, and F3 respectively. Then, choose the correct answer from the options given below.

1. (1) F1 = 0, F2 = 0, F3 = 0
2. (2) F1 = 0, F2 ≠ 0, F3 = 0
3. (3) F1 ≠ 0, F2 ≠ 0, F3 ≠ 0
4. (4) F1 = 0, F3 ≠ 0, F2 = 0

Correct Answer: (2) F1 = 0, F2 ≠ 0, F3 = 0
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Question 29:

Two charged metallic spheres with radii R1 and R2 are brought into contact and then separated. The ratio of final charges Q1 and Q2 on the two spheres respectively will be ____________.

1. (1) Q1/Q2 = R1/R2
2. (2) Q1/Q2 < R1/R2
3. (3) Q1/Q2 > R1/R2
4. (4) Q1/Q2 = R1/R2²

Correct Answer: (1) Q1/Q2 = R1/R2
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Question 30:

Two charged particles, placed at a distance d apart in vacuum, exert a force F on each other. Now, each of the charges is doubled. To keep the force unchanged, the distance between the charges should be changed to __________.

1. (1) 4d
2. (2) 2d
3. (3) d
4. (4) d/2

Correct Answer: (4) d/2
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Question 31:

Two parallel plate capacitors of capacitances 2 µF and 3 µF are joined in series, and the combination is connected to a battery of V volts. The values of potential across the two capacitors V1 and V2 and energy stored in the two capacitors U1 and U2 respectively are related as _______________________.

1. (1) V1/V2 = U1/U2 = 2/3
2. (2) V1/V2 = U1/U2 = 3/2
3. (3) V1/V2 = 2/3 and U1/U2 = 3/2
4. (4) V1/V2 = 3/2 and U1/U2 = 2/3

Correct Answer: (1) V1/V2 = U1/U2 = 2/3
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Question 32:

Two resistances of 100 Ω and 200 Ω are connected in series across a 20 V battery as shown in figure below. The reading in a 200 Ω voltmeter connected across the 200 Ω resistance is ___________.

1. (1) 4 V
2. (2) 20/3 V
3. (3) 10 V
4. (4) 16 V

Correct Answer: (2) 20/3 V
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Question 33:

The current through a 4/3 Ω external resistance connected to a parallel combination of two cells of 2 V and 1 V emf and internal resistances of 1 Ω and 2 Ω respectively is ___________.

1. (1) 1 A
2. (2) 2/3 A
3. (3) 3/4 A
4. (4) 5/6 A

Correct Answer: (2) 2/3 A
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Question 34:

A metallic wire of uniform area of cross section has a resistance R, resistivity ρ, and power rating P at V volts. The wire is uniformly stretched to reduce the radius to half the original radius. The values of resistance, resistivity, and power rating at V volts are now denoted by R', ρ', and P' respectively. The corresponding values are correctly related as ________________.

1. (1) ρ' = 2ρ, R' = 2R, P' = 2P
2. (2) ρ' = (1/2)ρ, R' = (1/2)R, P' = (1/2)P
3. (3) ρ' = ρ, R' = 16R, P' = (1/16)P
4. (4) ρ' = ρ, R' = (1/16)R, P' = 16P

Correct Answer: (3) ρ' = ρ, R' = 16R, P' = (1/16)P
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Question 35:

Three magnetic materials are listed below:
(A) Paramagnetics
(B) Diamagnetics
(C) Ferromagnetics
Choose the correct order of the materials in increasing order of magnetic susceptibility.

1. (1) (A), (B), (C)
2. (2) (C), (A), (B)
3. (3) (B), (A), (C)
4. (4) (B), (C), (A)

Correct Answer: (3) (B), (A), (C)
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Question 36:

Two infinitely long straight parallel conductors carrying currents I1 and I2 are held at a distance d apart in vacuum. The force F on a length L of one of the conductors due to the other is ________________.

1. (1) Proportional to L but independent of I1 × I2
2. (2) Proportional to I1 × I2 but independent of length L
3. (3) Proportional to I1 × I2 × L
4. (4) Proportional to I1 × I2 / L

Correct Answer: (3) Proportional to I1 × I2 × L
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Question 37:

In the circuit shown below, a current 3I enters at A. The semicircular parts ABC and ADC have equal radii 'r' but resistances 2R and R respectively. The magnetic field at the center of the circular loop ABCD is _____________.

1. (1) 4r I₀ μ out of the plane
2. (2) 4r I₀ μ into the plane
3. (3) μ₀ 3I / 4r out of the plane
4. (4) μ₀ 3I / 4r into the plane

Correct Answer: (3) μ₀ 3I / 4r out of the plane
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Question 38:

A square loop with each side 1 cm, carrying a current of 10 A, is placed in a magnetic field of 0.2 T. The direction of magnetic field is parallel to the plane of the loop. The torque experienced by the loop is _____.

1. (1) zero
2. (2) 2 × 10⁻⁴ Nm
3. (3) 2 × 10⁻² Nm
4. (4) 2 Nm

Correct Answer: (1) zero
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Question 39:

In an ac circuit, the current leads the voltage by π/2. The circuit is __________________.

1. (1) purely resistive
2. (2) should have circuit elements with resistance equal to reactance
3. (3) purely inductive
4. (4) purely capacitive

Correct Answer: (4) purely capacitive
View Solution

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Question 40:

In a pair of adjacent coils, for a change of current in one of the coils from 0 A to 10 A in 0.25 s, the magnetic flux in the adjacent coil changes by 15 Wb. The mutual inductance of the coils is _____________.

1. (1) 120 H
2. (2) 12 H
3. (3) 1.5 H
4. (4) 0.75 H

Correct Answer: (3) 1.5 H
View Solution

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Question 41:

A wire of irregular shape in figure (a) and a circular loop of wire in figure (b) are placed in different uniform magnetic fields as shown in the figures below. In figure (a), the magnetic field is perpendicular into the plane. In figure (b), the magnetic field is perpendicular out of the plane.
The wire in figure (a) is turning into a circular loop and that in figure (b) into a narrow straight wire. The direction of induced current will be ________________.

1. (1) clockwise in both (a) and (b)
2. (2) anticlockwise in both (a) and (b)
3. (3) clockwise in (a) and anticlockwise in (b)
4. (4) anticlockwise in (a) and clockwise in (b)

Correct Answer: (4) anticlockwise in (a) and clockwise in (b)
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Question 42:

The current through a 4/3 Ω external resistance connected to a parallel combination of two cells of 2 V and 1 V emf and internal resistances of 1 Ω and 2 Ω respectively is __________.

1. (1) 1 A
2. (2) 2/3 A
3. (3) 3/4 A
4. (4) 5/6 A

Correct Answer: (2) 2/3 A
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Question 43:

A metallic wire of uniform area of cross-section has a resistance R, resistivity ρ and power rating P at V volts. The wire is uniformly stretched to reduce the radius to half the original radius. The values of resistance, resistivity and power rating at V volts are now denoted by R', ρ' and P' respectively. The corresponding values are correctly related as _____________________.

1. (1) ρ' = 2ρ, R' = 2R, P' = 2P
2. (2) ρ' = (1/2)ρ, R' = (1/2)R, P' = (1/2)P
3. (3) ρ' = ρ, R' = 16R, P' = (1/16)P
4. (4) ρ' = ρ, R' = (1/16)R, P' = 16P

Correct Answer: (3) ρ' = ρ, R' = 16R, P' = (1/16)P
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Question 44:

Three magnetic materials are listed below
(A) paramagnetics
(B) diamagnetics
(C) ferromagnetics
Choose the correct order of the materials in increasing order of magnetic susceptibility.

1. (1) (A), (B), (C)
2. (2) (C), (A), (B)
3. (3) (B), (A), (C)
4. (4) (B), (C), (A)

Correct Answer: (3) (B), (A), (C)
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Question 45:

Two infinitely long straight parallel conductors carrying currents I₁ and I₂ are held at a distance d apart in vacuum. The force F on a length L of one of the conductors due to the other is ________________.

1. (1) proportional to L but independent of I₁ × I₂
2. (2) proportional to I₁ × I₂ but independent of length L
3. (3) proportional to I₁ × I₂ × L
4. (4) proportional to L / I₁ × I₂

Correct Answer: (3) proportional to I₁ × I₂ × L
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Question 46:

In the circuit shown below, a current I enters at A. The semicircular parts ABC and ADC have equal radii 'r' but resistances 2R and R respectively. The magnetic field at the center of the circular loop ABCD is ____________.

1. (1) μ₀ I / 4r out of the plane
2. (2) μ₀ I / 4r into the plane
3. (3) μ₀ 3I / 4r out of the plane
4. (4) μ₀ 3I / 4r into the plane

Correct Answer: (3) μ₀ 3I / 4r out of the plane
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Question 47:

For fixed values of radii of curvature of lens, power of the lens will be ____________.

1. (1) P ∝ (μ - 1)
2. (2) P ∝ μ²
3. (3) P ∝ 1/μ
4. (4) P ∝ μ⁻²

Correct Answer: (4) P ∝ μ⁻²
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Question 48:

The graph correctly representing the variation of image distance 'v' for a convex lens of focal length 'f' versus object distance 'u' is _______________.

1. (1) A straight line with a slope
2. (2) A hyperbolic curve
3. (3) A linear increase
4. (4) A concave curve

Correct Answer: (2) A hyperbolic curve
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Question 49:

Using light from a monochromatic source to study diffraction in a single slit of width 0.1 mm, the linear width of central maxima is measured to be 5 mm on a screen held 50 cm away. The wavelength of light used is _______________.

1. (1) 2.5 x 10⁻⁷ m
2. (2) 4 x 10⁻⁷ m
3. (3) 5 x 10⁻⁷ m
4. (4) 7.5 x 10⁻⁷ m

Correct Answer: (3) 5 x 10⁻⁷ m
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Question 50:

Radiation of frequency 2v₀ is incident on a metal with threshold frequency v₀. The correct statement of the following is ________________.

1. (1) No photoelectrons will be emitted
2. (2) All photoelectrons emitted will have kinetic energy equal to hv₀
3. (3) Maximum kinetic energy of photoelectrons emitted can be hv₀
4. (4) Maximum kinetic energy of photoelectrons emitted will be 2hv₀

Correct Answer: (4) Maximum kinetic energy of photoelectrons emitted will be 2hv₀
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