JEE Mains 2026 4 April Morning Shift physics questions with solutions

Showing 1–10 of 25 questions

• MCQmediumsemiconductorLogic Gates & Boolean Operations

  Two 4-bit binary numbers A = 1101 and B = 1010 are applied to the logic circuit shown in the figure. The circuit first inverts A and then feeds Ā and B to a NAND gate. What is the 4-bit output Y?

  

  Options

  • Option A

    1101

  • Option B

    0010

  • Option C

    0111

  • Option D

    1000

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• MCQmediumGeometrical opticsSpherical Mirrors & Image Formation

  A rod of length 10 cm lies along the principal axis of a concave mirror of focal length 10 cm, as shown in the figure. The nearer end of the rod is 20 cm from the pole of the mirror, so the farther end is 30 cm from the pole. What is the length of the image of the rod?

  

  Options

  • Option A

    2.5 cm

  • Option B

    5 cm

  • Option C

    7.5 cm

  • Option D

    7 cm

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• IntegereasyProperties of solid and fluidSurface Tension, Surface Energy and Their Applications

  The surface tension of a soap solution is 3.5×10⁻² N·m⁻¹. The radius of a soap bubble is increased from 1 cm to 2 cm. Taking π = 22 / 7, if the work required is α×10⁻⁶ J, find α.

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• MCQeasyPhotoelectric effect and dual naturePhotoelectric Effect & Einstein's Equation

  The graph in the figure shows stopping potential V₀ as a function of the frequency ν of incident radiation for three photosensitive metals X₁, X₂ and X₃. Their threshold frequencies increase in the order X₁, X₂, X₃. If all three metals are illuminated with radiation of the same wavelength whose frequency is above all three thresholds, which metal emits photoelectrons with the greatest maximum kinetic energy?

  

  Options

  • Option A

    X₁

  • Option B

    X₂

  • Option C

    X₃

  • Option D

    All three metals emit photoelectrons with the same maximum kinetic energy

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• MCQmediumMagnetic effect of currentMagnetic Dipole Moment, Torque and Equilibrium of Current-Carrying Loops

  An insulated wire is wound into a flat spiral coil of N = 200 turns. The radius of the innermost turn is 3 cm and that of the outermost turn is 6 cm. The turns may be treated as uniformly distributed in radius. If the current is 20 mA, the magnetic dipole moment of the coil is α×10⁻² A·m². What is α?

  Options

  • Option A

    4.4

  • Option B

    2.64

  • Option C

    3.25

  • Option D

    1.2

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

  A wire A has length 0.314 m and Young's modulus 2×10¹⁰ N·m⁻². It is connected in series with another wire B whose length and Young's modulus are both twice those of A. Both wires have radius 0.2 mm. A mass of 0.8 kg is suspended from the free end of the combination. Neglect the masses of the wires and take g = 10 m·s⁻². What is the total extension of the two-wire combination?

  Options

  • Option A

    3 mm

  • Option B

    2 mm

  • Option C

    1.9 mm

  • Option D

    1 mm

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• MCQmediumCurrent electricityCircuit Theory & Kirchhoff’s Laws

  

  Refer to the multi-branch circuit shown in the figure. Using the source polarities and resistor values shown there, what are the potential difference V(A)-V(B) and the current through the external branch between A and B?

  Options

  • Option A

    24 V and 12 A

  • Option B

    24 V and 4 A

  • Option C

    18 V and 12 A

  • Option D

    27 V and 4 A

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• IntegereasyAC CircuitsSeries AC Circuits: Impedance, Phase Difference, Resonance and Power Factor

  A 10 mH inductor, $a_0.1$ μF capacitor and a 100 Ω resistor are connected in series across a 220 V, 70 Hz AC source. The power factor of the circuit is 0.5. If the magnitude of the difference between the inductive and capacitive reactances is √3 α Ω, find α.

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• MCQmediumThermodynamicsKinetic Theory of Gases and Molecular Properties

  One ideal gas sample contains n₁ moles at pressure P₁, volume V₁ and temperature T₁. A second ideal gas sample contains n₂ moles at pressure P₂, volume V₂ and temperature T₂. They are mixed, and the final mixture has pressure P, volume V and temperature T. Assuming ideal-gas behaviour, which expression gives T?

  Options

  • Option A

    (T₁+T₂) /2

  • Option B

    T₁T₂PV /(T₂P₁V₁+T₁P₂V₂)

  • Option C

    (T₂P₁V₁+T₁P₂V₂)(T₁T₂PV)

  • Option D

    |T₁-T₂| / 2

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• MCQeasyWave OpticsDiffraction of Light

  A single slit of width a is illuminated with monochromatic light of wavelength λ. A diffraction pattern is observed on a screen at distance D. What is the linear separation on the screen between the first and the third minima on the same side of the central maximum?

  Options

  • Option A

    λD / a

  • Option B

    1.5λD / a

  • Option C

    2λD / a

  • Option D

    3λD / a

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