JEE Mains 2026 4 April Morning Shift physics questions with solutions

Showing 1–10 of 25 questions

• 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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• MCQeasyProperties of solid and fluidpropertes of solid stress ,strain and modulus of elasticity

  An increase in pressure of 6.3×10⁷ N·m⁻² is required to produce a small decrease in the volume of water. The bulk modulus of water is 2.1×10⁹ N·m⁻². What is the percentage decrease in volume?

  Options

  • Option A

    2%

  • Option B

    3%

  • Option C

    6%

  • Option D

    4%

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• IntegereasyProperties of solid and fluidproperties of fluid and surface tension

  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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• MCQmediumThermodyanmicsthermodynmic process and work done

  An ideal gas undergoes a process described by P = P₀[1+(V₀ / V)²]⁻¹, where P₀ and V₀ are constants. Two samples A and B, each containing two moles of gas, have initial volumes V₀ and 3V₀, respectively. They undergo the stated process and, as described in the source problem, attain the same pressure. Following the state evaluation used in the provided solution, what is T(B)-T(A)?

  Options

  • Option A

    9P₀V₀ / (8R)

  • Option B

    11P₀V₀ / (10R)

  • Option C

    7P₀V₀ / (6R)

  • Option D

    13P₀V₀ / (11R)

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• MCQeasysemiconductorP-N jucntion and diode in reverse and forward bias

  Consider the capacitor-resistor-diode circuit shown in the figure. The capacitor is 20 μF and the resistor is 100 Ω. Of the two identical diodes, the forward-biased diode has resistance 10 Ω, while the other diode is reverse biased. What is the time constant of the circuit?

  

  Options

  • Option A

    2.2×10⁻³ s

  • Option B

    2.0×10⁻³ s

  • Option C

    2.1×10⁻³ s

  • Option D

    2.4×10⁻³ s

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• MCQeasyNuclear physicsNucles and its density radius and mass defect ,binding energy and its curve

  Two nuclei, each of mass number 3, combine with one nucleus of mass number 4 to form a nucleus of mass number 10. The binding energies per nucleon of the nuclei with mass numbers 3, 4 and 10 are 5.6 MeV, 7.4 MeV and 6.1 MeV, respectively. What is the magnitude of ΔMc² for the process?

  Options

  • Option A

    6.9 MeV

  • Option B

    7.9 MeV

  • Option C

    2.2 MeV

  • Option D

    4.3 MeV

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• MCQmediumGeometrical opticsspherical mirror

  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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• IntegereasyAc Cirucuitsseries combination of ac circuit and L-C-R circuit

  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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• MCQmediumCapacitorconnecting of capacitor with battery,connenctiong of two capacitor

  A parallel-plate air capacitor remains connected to an ideal battery while the plates are pulled apart at a uniform speed. If x is the instantaneous plate separation and the magnitude of the time rate of change of electrostatic energy is proportional to xᵅ, what is α?

  Options

  • Option A

    -2

  • Option B

    1

  • Option C

    -1

  • Option D

    2

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• MCQmediumRotational Motionmoment of inertia and kinetic energy in pure rotation

  A solid sphere of mass M and radius R is divided into two unequal parts. The smaller part has mass M /8 and is reshaped into a sphere of radius r. The larger part has mass 7M /8 and is reshaped into a circular disc of thickness t and radius 2R. Let I₁ be the moment of inertia of the smaller sphere about an axis through its centre, and I₂ be the moment of inertia of the disc about its diameter. Assuming the material density remains unchanged, what is I₂ / I₁?

  Options

  • Option A

    35

  • Option B

    70

  • Option C

    140

  • Option D

    210

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