JEE Mains 2026 5 April Morning Shift physics questions with solutions

Showing 1–10 of 25 questions

• IntegermediumElectromagnetic InductionSelf-Inductance, Induced EMF and Transient Analysis of L-R Circuits

  In the circuit shown in the figure, inductors L₁, L₂ and L₃ all have the same inductance L. Inductor L₁ is in series with a parallel combination of L₂ and L₃. Neglect mutual inductance. If U(total) is the total magnetic energy stored in the circuit and U(L₂) is the energy stored in inductor L₂, find U(total) /U(L₂).

  

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• MCQmediumProperties of solid and fluidElastic Properties of Solids: Stress, Strain and Elastic Moduli

  Two vertical steel wires support a 30 kg mass above a 10 kg mass and a pan, as shown in the figure. The upper wire has cross-sectional area 0.008 cm² and the lower wire has cross-sectional area 0.004 cm². The breaking stress of the steel is 12×10⁸ N·m⁻². Taking g = 10 m·s⁻², what is the maximum additional mass that can be placed in the pan without breaking either wire?

  

  Options

  • Option A

    56 kg

  • Option B

    38 kg

  • Option C

    96 kg

  • Option D

    5.6 kg

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• MCQmediumNewtons law of motion and FrictionPulley Systems & Applications

  Three masses are connected by two light strings and a fixed smooth pulley. A 4 kg mass hangs on the left side of the upper string. On the right side of the same string hangs another 4 kg mass, and a 6 kg mass is suspended below it by a second string. Let T₁ be the tension in the upper string and T₂ the tension in the lower string. Taking g = 10 m·s⁻², what is the ratio T₁/T₂?

  

  Options

  • Option A

    5/3

  • Option B

    2/3

  • Option C

    3/5

  • Option D

    2/5

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• MCQeasyUnits, Dimensions, Measurements and ErrorsVernier Calipers and Screw Gauge: Measurement and Errors

  In a Vernier calipers, when the two jaws are brought into contact, the zero of the Vernier scale lies to the right of the zero of the main scale. The 7th Vernier division coincides with a main-scale mark. If one main-scale division is 1 mm and the Vernier has 10 divisions, what is the zero error of the instrument?

  Options

  • Option A

    0.07 cm negative zero error

  • Option B

    0.7 cm negative zero error

  • Option C

    0.07 cm positive zero error

  • Option D

    0.7 cm positive zero error

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• MCQeasyUnits, Dimensions, Measurements and ErrorsDimensional Analysis and Its Applications

  The physical quantities L, C and R represent inductance, capacitance and resistance, respectively. Which of the following expressions has the dimensional formula [M L² T⁻⁴ A⁻²]?

  Options

  • Option A

    R/√(LC)

  • Option B

    R/(LC)

  • Option C

    C/√(LR)

  • Option D

    (1/R)√(L/C)

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• MCQmediumAtomic Structure and X-raysAtomic Structure & Bohr's Atomic Model

  In a hydrogen atom, an electron makes a transition from a higher orbit to a lower orbit. The radii of the initial and final Bohr orbits are in the ratio 16:4, corresponding to n(initial) = 4 and n(final) = 2. Taking the Rydberg constant as 1.0973×10⁷ m⁻¹, what is the wavelength of the emitted photon?

  Options

  • Option A

    121 nm

  • Option B

    242 nm

  • Option C

    486 nm

  • Option D

    974 nm

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• MCQmediumGeometrical opticsPrisms & Thin Prisms

  A ray of light travels through the material of an equilateral prism with speed 2.12×10⁸ m·s⁻¹. Taking the speed of light in vacuum as 3.0×10⁸ m·s⁻¹, what is the minimum angle of deviation produced by the prism?

  Options

  • Option A

    45°

  • Option B

    30°

  • Option C

    28°

  • Option D

    58°

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• MCQeasyWave OpticsYoung's Double-Slit Experiment (YDSE)

  In a Young double-slit experiment, the fringe width in air is 2.4 μm. The entire experiment is then carried out in a transparent medium of refractive index 1.2, while the slit separation and screen distance remain unchanged. What is the new fringe width?

  Options

  • Option A

    1.2 μm

  • Option B

    2.0 μm

  • Option C

    2.4 μm

  • Option D

    2.88 μm

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• MCQeasyElectromagnetic waveDisplacement Current, Maxwell's Equations and Properties of Electromagnetic Waves

  A displacement current of 4.0 A is established between the plates of a 6 μF parallel-plate capacitor. If the rate of change of potential difference across the capacitor is α×10⁶ V·s⁻¹, what is the value of α?

  Options

  • Option A

    0.58

  • Option B

    0.67

  • Option C

    0.82

  • Option D

    0.75

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• MCQmediumGeometrical opticsOptical Instruments & Magnifying Power

  A compound microscope uses two symmetric biconvex lenses as objective and eyepiece. The objective lens is cut by a plane perpendicular to its principal axis, producing two identical plano-convex lenses, and one of these halves is used as the new objective. If the object distance is kept unchanged, how should the tube length be changed to retain the same magnifying power?

  Options

  • Option A

    It must be doubled

  • Option B

    It must be increased by a factor 3 ÷ 2

  • Option C

    It must be halved

  • Option D

    It must be decreased by a factor 3 ÷ 2

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