2026 physics questions with solutions

Showing 1–10 of 32 questions

• MatchmediumGeometrical opticsdespersion of light ,despersive power and combination of prism

  In List-I, four optical effects are mentioned. The physical phenomena of light which are essential to describe these optical effects are given in List-II. Choose the option which describes the correct match between the entries in List-I to those in List-II.

  List 1

  1. (P) Colorful sky in north polar region (Aurora Borealis)

  2. (Q) Partially polarized sun light

  3. (R) Rainbow

  4. (S) Dark and bright fringes

  5. .

  List 2

  1. (1) Dispersion and reflection

  2. (2) Total internal reflection

  3. (3) Diffraction

  4. (4) Scattering of light by molecules in the atmosphere

  5. (5) Emission of radiation from oxygen and nitrogen atoms excited by charged particles

  Options

  • Option A

    P→5, Q→4, R→1, S→3

  • Option B

    P→4, Q→2, R→1, S→3

  • Option C

    P→4, Q→1, R→2, S→3

  • Option D

    P→5, Q→4, R→1, S→2

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  JEE Advanced2026Paper 1

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• Multi-correctmediumMagnetic effect of currentmotion of charge particle in magnetic field

  In a vacuum chamber, a particle of charge 1 μC and mass 1 mg is projected with a velocity (î + 2ĵ) m s⁻¹ from the XZ plane at time t = 0 in an electric field of 1î V m⁻¹. At t = 0.2 s, the electric field is switched off and a magnetic field of 6ĵ T is switched on. The acceleration due to gravity is -10ĵ m s⁻². Correct option(s) is/are:

  Select all that apply

  • Option A

    The vertical distance of the particle from the XZ plane at t = 0.3 s is 15 cm.

  • Option B

    The vertical distance of the particle from the XZ plane at t = 0.4 s is 10 cm.

  • Option C

    The radius of the trajectory of the particle for t > 0.2 s is 20 cm.

  • Option D

    The particle will be in the XZ plane at t = 0.35 s.

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  JEE Advanced2026Paper 2

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• Multi-correctmediumThermodynamicsthermodynmic process and work done

  Ten moles of an ideal monoatomic gas, initially in state a at atmospheric pressure and temperature T(a) = 27°C, is enclosed in a metal cylinder of volume V₀ fitted with a frictionless piston. The gas is suddenly compressed to state b with volume V₀/3. Now, keeping the piston stationary, the cylinder is submerged in a water bath of temperature 11°C until the gas reaches the temperature of the water bath, which is denoted as state c. Finally, while still in the water bath, the piston is brought slowly to its initial position, which is denoted as state f. If R is universal gas constant, then the correct option(s) is/are: [Given: 9^(1/3) = 2.08]

  Select all that apply

  • Option A

    The schematic P-V diagram of the processes described above is as shown in figure.

    
  • Option B

    The change in internal energy in going from state a to b is 4860R.

  • Option C

    The net change in the internal energy in the whole process is -240R.

  • Option D

    The pressure and temperature of the state b are 2.08 times the atmospheric pressure and 624 K, respectively.

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  JEE Advanced2026Paper 2

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• NumericmediumUnit dimension and errorvernier callipers and screw gauge

  Two thin wires, Wire-1 of diameter 0.650 mm and Wire-2 of unknown diameter d are given. To obtain the value of d, the diameters of the two wires are measured with a screw gauge. The screw gauge has a pitch of 0.5 mm and there are 100 divisions on the circular scale (CS). The smallest division on the linear scale (LS) is 0.5 mm. The table shows the readings of LS and CS for the measurements. The value of d (in μm) is:

  

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  JEE Advanced2026Paper 2

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• MCQmediumCurrent electricityElectric Current, Drift Velocity & Resistance

  A metal wire of cross-sectional area 0.5 mm² and length 100 m is connected across a battery of e.m.f. 2 V and internal resistance 1 Ω. The density, atomic mass and electrical conductivity of the metal are 6.35 × 10³ kg m⁻³, 63.5 g mol⁻¹ and 2 × 10⁸ S m⁻¹, respectively. Assuming one conduction electron per atom of the metal, the drift velocity (in mm s⁻¹) of the electrons in the wire is: [Take Avogadro’s number as 6 × 10²³ and charge of the electron as 1.6 × 10⁻¹⁹ C.]

  Options

  • Option A

    0.052

  • Option B

    0.104

  • Option C

    0.208

  • Option D

    0.156

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  JEE Advanced2026Paper 2

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• MCQmediumGeometrical opticsprism and thin prism

  A beam of polychromatic light passes through a thin prism of prism angle 6°. The refractive index of the material of the prism varies with wavelength λ as n(λ) = αλ + β/λ², where α = 3 μm⁻¹ and β = 0.096 μm². If λ(min) is the wavelength at which the angle of minimum deviation D(min) is smallest, then the correct value of D(min) at λ(min) is:

  Options

  • Option A

    6.4°

  • Option B

    4.8°

  • Option C

    3.2°

  • Option D

    2.4°

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  JEE Advanced2026Paper 2

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• MCQmediumNuclear physicsradioactivity and law of decay

  A nuclear reactor starts producing a radioactive nuclide X from t = 0, at a constant rate of α per second. Each decay of X produces energy E₀, which is utilized to heat a liquid of mass m and specific heat s. Assuming no heat loss from the liquid and taking λ as the decay constant of X, the rate of increase in the temperature of the liquid is:

  Options

  • Option A

    αE₀(ms)⁻¹(1 - e⁻λᵗ)

  • Option B

    αE₀(ms)⁻¹(eλᵗ - 1)

  • Option C

    λE₀(ms)⁻¹(1 - e⁻λᵗ)

  • Option D

    E₀(ms)⁻¹(α - λe⁻λᵗ)

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  JEE Advanced2026Paper 2

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• NumericmediumWave Opticspolarisation

  As shown in the figure, a ray AB of unpolarized light enters from water of refractive index n(w) = 4/3 into a medium of refractive index n(p) = 4/√3 after passing through a glass plate of refractive index n(g) = 1.5 and a layer of water. At a particular incident angle i the reflected ray CD is polarized in the direction as shown in the figure. The value of i (in degrees) is:

  

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  JEE Advanced2026Paper 2

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• NumericdifficultCurrent electricityElectrical Instruments: Galvanometer, Ammeter, Voltmeter & Potentiometer

  As shown in the figure, the resistance of a galvanometer G can be found by the half-deflection method. Here the resistance R₂ is adjusted such that when the key K is closed the deflection in the galvanometer becomes half of the value as compared to when K is open. Half-deflection is obtained at R₂ = 4 Ω and thus the galvanometer resistance is found to be 6 Ω. In this half-deflection condition the current (in mA) through the resistor R₁ is:

  

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  JEE Advanced2026Paper 2

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• Multi-correctmediumAtomic Structure and X-raysatomic structure and bohr atomic model

  Consider a hydrogen atom with vₖ, rₖ, and Kₖ denoting the velocity, orbital radius and kinetic energy of the electron in the kth orbit, respectively. The electron undergoes a transition from the nth orbit, emitting radiation corresponding to the Lyman series. Considering h to be Planck’s constant and ε₀ the permittivity of free space, the correct statement(s) is/are:

  Select all that apply

  • Option A

    Magnitude of change in kinetic energy of electron can be expressed as (h/4π)|nvₙ/rₙ - v₁/r₁|.

  • Option B

    Magnitude of change in de Broglie wavelength of the electron can be expressed as [e²/(4ε₀)]|1/Kₙ - 1/K₁|.

  • Option C

    Frequency of the radiation emitted can be expressed as [e²/(8πε₀h)](1/r₁ - 1/rₙ).

  • Option D

    Magnitude of change in total energy of the electron can be expressed as (h/2π)|v₁/r₁ - nvₙ/rₙ|.

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  JEE Advanced2026Paper 1

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