Physics Previous Year Questions (2024–2026)

640 Physics previous-year questions spanning 2024–2026.

Physics 2026 · Work, Energy and Power

Potential energy (V) versus distance (x) is given by the graph, Rank various regions as per the magnitudes of the force (F) acting on a particle from high to low. {{IMG1}}

Physics 2026 · Mechanical Properties of Fluids

Water flows through a horizontal tube as shown in the figure. The difference in height between the water columns in vertical tubes is 5 cm and the area of cross-sections at A and B are $6\text{ cm}^{2}$ and $3\text{ cm}^{2}$ respectively. The rate of flow will be ____ $\text{cm}^{3}$/s. (take g = 10 $\text{m/s}^{2}$) {{IMG1}}

Physics 2026 · Electrostatics

A parallel plate capacitor has capacitance C, when there is vacuum within the parallel plates. A sheet having thickness $\left(\frac{1}{3}\right)^{\mathrm{rd}}$ of the separation between the plates and relative permittivity K is introduced between the plates. The new capacitance of the system is :

Physics 2026 · System of Particles and Rotational Motion

A uniform rod of mass m and length l suspended by means of two identical inextensible light strings as shown in figure. Tension in one string immediately after the other string is cut, is ____. (g acceleration due to gravity) {{IMG1}}

Physics 2026 · Electromagnetic Induction

A 1 m long metal rod AB completes the circuit as shown in figure. The area of circuit is perpendicular to the magnetic field of 0.10 T. If the resistance of the total circuit is $2\Omega$ then the force needed to move the rod towards right with constant speed (v) of 1.5 m/s is ____ N. {{IMG1}}

Physics 2026 · Semiconductor Electronics

The given circuit works as : {{IMG1}}

Physics 2026 · Ray Optics and Optical Instruments

A collimated beam of light of diameter 2 mm is propagating along x-axis. The beam is required to be expanded in a collimated beam of diameter 14 mm using a system of two convex lenses. If first lens has focal length 40 mm, then the focal length of second lens is ____ mm.

Physics 2026 · Current Electricity

The heat generated in 1 minute between points A and B in the given circuit, when a battery of 9V with internal resistance of $1 \Omega$ is connected across these points is ____ J. {{IMG1}}

Physics 2026 · System of Particles and Rotational Motion

Two identical thin rods of mass M kg and length L m are connected as shown in figure. Moment of inertia of the combined rod system about an axis passing through point P and perpendicular to the plane of the rods is $\frac{x}{2} ML^{2}\text{ kg m}^{2}$. The value of x is {{IMG1}}

Physics 2026 · Thermal Properties of Matter

A gas based geyser heats water flowing at the rate of $5.0$ litres per minute from $27^{\circ}\text{C}$ to $87^{\circ}\text{C}$. The rate of consumption of the gas is ____ g/s. (Take heat of combustion of gas = $5.0 \times 10^{4}$ J/g, specific heat capacity of water = $4200\text{ J/kg.}^{\circ}\text{C}$)

Physics 2026 · Electromagnetic Induction

A conducting circular loop of area $1.0 \, \mathrm{m}^{2}$ is placed perpendicular to a magnetic field which varies as $B = \sin(100 \, t)\text{ Tesla}$. If the resistance of the loop is $100 \, \Omega$, then the average thermal energy dissipated in the loop in one period is ____ J.

Physics 2026 · Units and Measurements

In an experiment the values of two spring constants were measured as $k_{1}=(10\pm0.2)\text{ N/m}$ and $k_{2}=(20\pm0.3)\text{ N/m}$. If these springs are connected in parallel, then the percentage error in equivalent spring constant is :

Physics 2026 · Laws of Motion

A 4 kg mass moves under the influence of a force $\vec{\mathrm{F}} = (4\mathrm{t}^3\hat{\mathrm{i}} - 3\mathrm{t}\hat{\mathrm{j}})\text{ N}$ where t is the time in second. If mass starts from origin at $t = 0$, the velocity and position after $t = 2\text{s}$ will be:

Physics 2026 · Units and Measurements

Consider a modified Bernoulli equation. $\left(\mathrm{P}+\frac{\mathrm{A}}{\mathrm{Bt}^{2}}\right)+\rho\mathrm{g}(\mathrm{h}+\mathrm{Bt})+\frac{1}{2}\rho\mathrm{V}^{2}=\text{constant}$ If t has the dimension of time then the dimensions of A and B are ____, ____ respectively.

Physics 2026 · Moving Charges and Magnetism

A current carrying is placed vertically and a particle of mass m with charge Q is released from rest. The particle moves along the axis of solenoid. If g is acceleration due to gravity then the acceleration (a) of the charged particle will satisfy :

Physics 2026 · Electromagnetic Waves

The electric field a plane electromagnetic wave is given by : $$E_y = 69 \sin [ 0.6 \times 10^3 x - 1.8 \times 10^{11} t ]\text{ V/m}.$$ The expression for magnetic field associated with this electromagnetic wave is ____ T.

Physics 2026 · Wave Optics

In a double slit experiment the distance between the slits is 0.1 cm and the screen is placed at 50 cm from the slits plane. When one slit is covered with a transparent sheet having thickness t and refractive index n(= 1.5), the central fringe shifts by 0.2 cm. The value of t is ____ cm.

Physics 2026 · Dual Nature of Radiation and Matter

A light wave described by $E = 60[\sin(3 \times 10^{15}t) + \sin(12 \times 10^{15}t)]$ (in SI units) falls on a metal surface of work function 2.8 eV. The maximum kinetic energy of ejected photoelectron is (approximately) ____ eV. ($h = 6.6 \times 10^{-34}\text{ J}\cdot\text{s}$. and $e = 1.6 \times 10^{-19}\text{C}$)

Physics 2026 · Atoms

If an alpha particle with energy 7.7 MeV is bombarded on a thin gold foil, the closest distance from nucleus it can reach is ____ m. (Atomic number of gold = 79 and $\frac{1}{4\pi \in_{0}} = 9 \times 10^{9}$ in SI units)

Physics 2026 · Thermal Properties of Matter

An aluminium and steel rods having same lengths and cross-sections are joined to make total length of 120 cm at 30°C. The coefficient of linear expansion of aluminium and steel are $24 \times 10^{-6}/^{\circ}\mathrm{C}$ and $1.2 \times 10^{-5}/^{\circ}\mathrm{C}$, respectively. The length of this composite rod when its temperature is raised to 100°C, is ____ cm.
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