CUET Free MOCK Test of Physics: Check knowledge for upcoming exam 2025

As per Bohr's model the energy (in eV) required to remove electron from ground state of Li⁺⁺ (doubly ionised lithium atom) is

What is the approximate wavelength of the radiation emitted when the electron in an hydrogen atom jumps from n = ∞ to n = 3?

Which of the following statements are correct?
A. Moving charges produce a magnetic field in the surrounding space.
B. An instrument called the current balance is used to measure mechanical force between two parallel conductors.
C. The electron has an intrinsic magnetic moment, which is known as the orbital magnetic moment.
D. Magnetic field of several sources is the vector addition of magnetic field of each individual source.
E. The radius of the circular component of motion is called the radius of the helix.
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A proton and an alpha particle enter a uniform magnetic field with the same velocity and move along circular paths. The time period of the alpha particle will be:

When temperature of a ferromagnetic material is increased by 20%, what is the percentage change in its magnetic susceptibility?

Which of the following statements are correct?
A. Two major types of resistors are wire bound resistors and carbon resistors.
B. Mobility is the drift velocity per unit electric field.
C. The internal resistance of dry cells is much lower than the common electrolytic cells.
D. In electrolytic liquids, electrons carry the electric current.
E. Potentiometer is unaffected by the internal resistance of the source.
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For which of the following, a capacitor acts as an infinite resistance component in the circuit?

A charge Q is divided into two parts, q and (Q – q). The repulsion between them is maximum when Q : q is

A television transmitting antenna is 84 m tall. How much service area can it cover, if the receiving antenna is at the ground level?

Figure below shows a plot of current I through the cross-section of a wire over a time interval of 12 s. How much charge flows through the wire during this time period?

Which of the following gates can give AND gate by its repetitive use?

For transmitting a modulated signal of wavelength λ, the antenna should have minimum size

Which one of the following cannot be polarized?

In a feedback amplifier, if the feedback voltage is in opposite phase, the gain is less than 1. Then it will

A charged ball ‘M’ hangs from a silk thread ‘S’ which makes an angle β, with a large charged conducting sheet ‘P’ as shown. The surface charge density σ of the sheet is proportional to

X-rays of wavelength λ = 1Å have frequency

When a number of capacitors are connected in parallel between two points increases, the equivalent capacitance

Which one among the following shows particle nature of light?

A metal conductor of length 1 m rotates in vertical plane about an axis passing through one of its ends at angular velocity 4 rad s^–1. What is the emf developed between the two ends of the conductor, if the horizontal component of the earth’s magnetic field is 0.2 G?

There is a solenoid of length 1 m has a radius of 1 cm and is made up of 1000 tums. It carries a current of 10 A. The magnitude of magnetic field inside the solenoid is.

The magnetic flux passing perpendicular to the plane of coil is changing according to the equation φ = 6t2 + 7t + 1, where ‘φ’ is in mWb and ‘t’ in sec. The magnitude of induced emf at t = 2 s is

Which of the following statements are correct?
A. Dispersion is the splitting of light into it’s constituent colours.
B. The unit for power of a lens is m–1.
C. Optical fibres consist of glass fibres coated with a thin layer of material of higher refractive index.
D. Cassegrain telescope has the advantages of a large focal length in a short telescope.
E. Glass is a dispersive medium.
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Which of the following is not the property of β– ray?

A resistance of 15 Ω is connected in series with an unknown resistance R₁. This combination is connected to one gap of a meter bridge, while a resistance R₂ is connected in the other gap. The balance point is at 50 cm. When 15 Ω is removed, the balance point shifts by 10 cm. The value of R₁ is

In a potentiometer arrangement, a cell of emf 1.5 V gives a balance point at 45.0 cm length of the wire. If the cell is replaced by another cell of emf 2.25 V. Where will the balance point shift to?

When a steady current flows in a metallic conductor of non-uniform cross section. Which of these quantities is constant along the conductor?
A. Current
B. Electric field
C. Drift speed
D. Current density E. Potential gradient
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A semiconducting device is connected as shown in the figure A current is found to pass through the circuit. On reversing the polarity of the battery. The current in the circuit drops to almost zero. What is the device?

An infinitely long straight conductor carries a current of 150 A. At what distance from the conductor is the magnetic field caused by the current equal to 10^–4 T?

The refractive index of air with respect to glass 2/3. The refractive index of diamond will respect to air is 2.4. What will be the refractive index of glass with respect to diamond?

The capacitance of a capacitor is 4 μF and it's potential is 100 V. The energy released on discharging it fully will be

Which of the following combinations should be used for better tuning of an LCR circuit used for communication?

A metal plate is getting heated. It can be because of
A. An alternating current is passing through the plate.
B. It is placed in a time varying magnetic field.
C. A direct current is passing through the plate.
D. It is placed in a space varying magnetic field, but does not vary with time
E. It is placed in a time constant magnetic field
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The total charge of an electric dipole is (Where ‘q’ is the point charge on either side of the dipole and ‘e’ is the charge of an electron)