List of top Questions asked in CUET (UG)- 2023

Find the effective impedance in the circuit if the source is: a) DC source and b) High frequency AC source

Two charges 5 µC and -2 µC (with no external field) are placed at (-9 cm, 0, 0) and (9 cm, 0, 0) respectively. The work required to separate the two charges infinitely away from each other is :

The graph shows the variation of the magnification (m) produced by a thin lens with image distance (v). The focal length of the lens is:

Which of the following is connected to the coil of the galvanometer, to protect it from possible damages due to large current?

Match List I with List II

Choose the correct answer from the options given below:

A flask contains Argon and Chlorine in the ratio of 2:1 by mass. The temperature of the mixture is 27°C. The ratio of root mean square speed of molecules of two gases will be: (atomic mass of Argon =40 u and molecular mass of Chlorine = 71 u)

Two polaroids P₁ and P₂ are set in crossed positions. A third polaroid P₃ is placed between the two making an angle a with the axis passing from the first polaroid P₁, In what orientation will the transmitted intensity be maximum?

Which of the following is/are responsible for the formation of Rainbow?
(A) Dispersion of light
(B) Interference of light
(C) Reflection of light
(D) Refraction of light
Choose the correct answer from the options given below:

Match List I with List II

List I: Frequency Range	List II: Types of Waves
(I) 1 × 1016 − 3 × 1021 Hz	(D) γ-rays
(II) 1 × 109 − 3 × 1011 Hz	(B) Microwaves
(III) 1 × 108 − 5 × 1022 Hz	(A) X-rays
(IV) 5 × 105 − 109 Hz	(C) Radio waves

The susceptibility ($X_m$) and permeability (μ) of a perfectly diamagnetic substance are:

Ferro-magnetic materials used in transformer core must have:

Choose the correct statements:
(A) A nuclide is represented as \(^Z_AX\)
(B) Nuclids with same number of protons are called isotopes
(C) a-ray scattering experiments allow determination of the nuclear radius
(D) Nuclids with same number of neutrons are called isotones
(E) The nuclear force distinguishes between neutron and proton
Choose the correct answer from the options given below:

An emf of 0.5 V is developed in the secondary coil, when current in primary coil changes from 5.0 A to 2.0 A in 300 milliseconds. The mutual inductance of two coils would be:

A cell of constant emf is first connected to a resistance \(R_1\) and then to \(R_2\). If power delivered in both cases are same, then the internal resistance of the cell is:

A coil having 'n' turns and resistance 'R'Ω is connected with a galvanometer of resistance '4R' Ω. What is the induced current in the circuit when this combination (coil+galvanometer) is moved in time t from a magnetic flux Φ1 to Φ2?

The displacement current due to time varying electric field is given by

An electromagnetic wave going through vacuum is described by \( E = E_0 \sin(kx - \omega t) \), \( B = B_0 \sin(kx - \omega t) \), then:

At what speed should a galaxy move with respect to earth so that spectral line of 600.0 nm appears as 600.6 nm?

The energy diagram of a hydrogen atom is given below. Arrange the wavelengths corresponding to different emissions in increasing order.

To protect galvanometer from possible damages due to large current, which of the following should be connected to its coil:

In AC circuits, the relation that holds is \( Z = \frac{E_U}{I_U} \), where:

An infinite line charge produces an electric field of 9 × 10⁶ N/C at a distance of 20 cm. The linear charge density will be :

For a long wire carrying a current of 10 A, the magnitude of magnetic field at a point 4 cm away from it will be:

Match List I with List II

	LIST I		LIST II
A.	Infra red waves	I.	Eye surgery
B.	Microwaves	II.	1 nm to 10-3 nm
C.	Ultraviolet	III.	Heat waves
D.	X-rays	IV.	Produced by special vaccum tubes

Choose the correct answer from the options given below:

The shape of graph between 1/u and 1/v in case of a convex lens is: