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

In a concave mirror, an object is placed at a distance x from the focus and the image is formed at a distance y from the focus. What is the focal length of the mirror?

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?

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

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

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)

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

The electron in a hydrogen atom rises from its n = 1 state to n = 4 state by absorbing energy. The energy of the electron in the n = 1 state is –13.6 eV. How much energy is absorbed by the electron in transition?

A telescope has an objective lens of 0.1 m diameter and is situated at a distance of 500 m from two objects. What will be the minimum distance between these two objects which can be resolved by the telescope? The mean wavelength of light is 600 nm.

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

Which one among the following shows particle nature of light?

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

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
Choose the correct answer from the options given below:

As per Bohr's model the energy (in eV) required to remove electron from ground state of Li⁺⁺ (doubly ionised lithium atom) 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.
Choose the correct answer from the options given below:

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

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?

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

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

Which of the following is not the property of β– ray?

For which of the following, a capacitor acts as an infinite resistance component in the circuit?

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.
Choose the correct answer from the options given below:

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
Choose the correct answer from the options given below:

A radioactive isotope has a half life of T years. How long (in years) will it take the activity to reduce to 3.125% of it's original value?

A parallel plate air capacitor has a capacity ‘C’, distance of separation between its plates is ‘x’ and potential difference applied across the plates is V. What is the force of attraction between the plates of the parallel plate air capacitor?

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

At the time of sunset, the sun appears to be at an altitude higher than its actual position. This is because of

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

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?

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:

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.

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