Physics Previous Year Questions 2025 (2025–2025)

375 Physics previous-year questions spanning 2025–2025.

Physics 2025 · Ray Optics and Optical Instruments

Two identical objects are placed in front of convex mirror and concave mirror having same radii of curvature of $12 \, \text{cm}$ , at the same distance of $18 \, \text{cm}$ from the respective mirrors. The ratio of sizes of the images formed by convex mirror and by concave mirror is:

Physics 2025 · System of Particles and Rotational Motion

A wheel of radius $0.2 \mathrm{~m}$ rotates freely about its center when a string that is wrapped over its rim is pulled by force of $10 \mathrm{~N}$ as shown in figure. The established torque produces an angular acceleration of $2 \mathrm{rad} / \mathrm{s}^{2}$ . Moment of inertia of the wheel is ________ kg $m^2$ . (Acceleration due to gravity $= 10\mathrm{m} / \mathrm{s}^2$) {{IMG1}}

Physics 2025 · Electrostatics

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Net dipole moment of a polar linear isotropic dielectric substance is not zero even in the absence of an external electric field. Reason (R): In absence of an external electric field, the different permanent dipoles of a polar dielectric substance are oriented in random directions. In the light of the above statements, choose the most appropriate answer from the options given below:

Physics 2025 · Moving Charges and Magnetism

In a moving coil galvanometer, two moving coils $M_1$ and $M_2$ have the following particulars: $$\begin{aligned} R_1 &= 5 \ \Omega, \quad N_1 = 15, \quad A_1 = 3.6 \times 10^{-3} \ \mathrm{m}^2, \quad B_1 = 0.25 \ \mathrm{T} \\ R_2 &= 7 \ \Omega, \quad N_2 = 21, \quad A_2 = 1.8 \times 10^{-3} \ \mathrm{m}^2, \quad B_2 = 0.50 \ \mathrm{T} \end{aligned}$$ Assuming that torsional constant of the springs are same for both coils, what will be the ratio of voltage sensitivity of $M_1$ and $M_2$ ?

Physics 2025 · System of Particles and Rotational Motion

The moment of inertia of a circular ring of mass $M$ and diameter $r$ about a tangential axis lying in the plane of the ring is:

Physics 2025 · Mechanical Properties of Fluids

Two water drops each of radius $r$ coalesce to form a bigger drop. If $T$ is the surface tension, the surface energy released in this process is:

Physics 2025 · Dual Nature of Radiation and Matter

An electron with mass $m$ with an initial velocity $(t = 0)$ $\vec{v} = v_0\hat{i}$ ($v_0 > 0$) enters a magnetic field $\vec{B} = B_0\hat{j}$ . If the initial de-Broglie wavelength at $t = 0$ is $\lambda_0$ then its value after time $t$ would be:

Physics 2025 · Waves

A sinusoidal wave of wavelength $7.5 \ \mathrm{cm}$ travels a distance of $1.2 \ \mathrm{cm}$ along the x-direction in $0.3 \ \mathrm{sec}$. The crest P is at $x = 0$ at $t = 0 \ \mathrm{sec}$ and maximum displacement of the wave is $2 \ \mathrm{cm}$ . Which equation correctly represents this wave?

Physics 2025 · Units and Measurements

Given a charge $q$, current $I$ and permeability of vacuum $\mu_0$ . Which of the following quantity has the dimension of momentum?

Physics 2025 · Electromagnetic Induction

A solenoid having area $A$ and length $l$ is filled with a material having relative permeability 2. The magnetic energy stored in the solenoid is :

Physics 2025 · Electrostatic Potential and Capacitance

Two large plane parallel conducting plates are kept $10\mathrm{cm}$ apart as shown in figure. The potential difference between them is V. The potential difference between the points A and B (shown in the figure) is : {{IMG1}}

Physics 2025 · Thermodynamics

Identify the characteristics of an adiabatic process in a monoatomic gas. (A) Internal energy is constant. (B) Work done in the process is equal to the change in internal energy. (C) The product of temperature and volume is a constant. (D) The product of pressure and volume is a constant. (E) The work done to change the temperature from $T_1$ to $T_2$ is proportional to $(T_2 - T_1)$ Choose the correct answer from the options given below:

Physics 2025 · Atoms

Assuming the validity of Bohr's atomic model for hydrogen like ions the radius of $\mathrm{Li}^{++}$ ion in its ground state is given by $\frac{1}{\mathrm{X}}\mathrm{a}_0$ , where $\mathrm{X} = \_ \_ \_ .$ (Where $\mathbf{a}_0$ is the first Bohr's radius.)

Physics 2025 · Nuclei

Energy released when two deuterons $({}_{1}\mathrm{H}^{2})$ fuse to form a helium nucleus $({}_{2}\mathrm{He}^{4})$ is: (Given: Binding energy per nucleon of ${}_1\mathrm{H}^2 = 1.1$ MeV and binding energy per nucleon of ${}_2\mathrm{He}^4 = 7.0$ MeV)

Physics 2025 · Semiconductor Electronics: Materials, Devices and Simple Circuits

In the digital circuit shown in the figure, for the given inputs the P and Q values are : {{IMG1}}

Physics 2025 · Motion in a Straight Line

A sportsman runs around a circular track of radius $r$ such that he traverses the path ABAB. The distance travelled and displacement, respectively, are {{IMG1}}

Physics 2025 · Laws of Motion

A body of mass $1\mathrm{kg}$ is suspended with the help of two strings making angles as shown in figure. Magnitude of tensions $\mathbf{T}_1$ and $\mathbf{T}_2$ , respectively, are (in N): {{IMG1}}

Physics 2025 · Ray Optics and Optical Instruments

A bi-convex lens has radius of curvature of both the surfaces same as $1/6$ cm. If this lens is required to be replaced by another convex lens having different radii of curvatures on both sides ( $R_1 \neq R_2$ ), without any change in lens power then possible combination of $R_1$ and $R_2$ is:

Physics 2025 · Electromagnetic Waves

If $\mu_0$ and $\varepsilon_0$ are the permeability and permittivity of free space, respectively, then the dimension of $\left(\frac{1}{\mu_0\varepsilon_0}\right)$ is:

Physics 2025 · Thermal Properties of Matter

Match List-I with List-II. List-I: (A) Heat capacity of body (B) Specific heat capacity of body (C) Latent heat (D) Thermal conductivity List-II: (I) $\mathrm{Jkg^{-1}}$ (II) $\mathrm{JK}^{-1}$ (III) $\mathrm{Jkg^{-1}K^{-1}}$ (IV) $\mathrm{Jm}^{-1}\mathrm{K}^{-1}\mathrm{s}^{-1}$ Choose the correct answer from the options given below:
Rankbit System
JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%) | JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%)

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