JEE Mains 2025 3 April Morning Shift physics questions with solutions

Showing 1–10 of 25 questions

• MCQeasyElectrostaticpotential energy and electric potential

  A uniformly charged spherical shell of radius 10 cm has electrostatic potential 120 V at its surface. The potentials at the centre, at r = 5 cm, and at r = 15 cm respectively are:

  Options

  • Option A

    0 V, 0 V, 80 V

  • Option B

    120 V, 120 V, 80 V

  • Option C

    0 V, 120 V, 40 V

  • Option D

    40 V, 40 V, 80 V

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• MCQmediumCapacitorcapacitor with dielectric

  A parallel-plate capacitor is half-filled with dielectric constants ε₁ and ε₂ in two different configurations shown in the original figure. In configuration 1 the two dielectric layers divide the plate separation equally; in configuration 2 they divide the plate area equally. If the corresponding capacitances are C₁ and C₂, then C₁/C₂ is:

  

  Options

  • Option A

    4ε₁ε₂/(ε₁+ε₂)²

  • Option B

    ε₀(ε₁+ε₂)/2

  • Option C

    ε₁ε₂²/(ε₁+ε₂)²

  • Option D

    ε₁ε₂/(ε₁+ε₂)

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• MCQeasyThermodynamicsheat and principle of calorimeter

  During melting of a slab of ice at 273 K under atmospheric pressure, which statement is correct?

  Options

  • Option A

    Positive work is done by the ice-water system on the atmosphere

  • Option B

    Positive work is done on the ice-water system by the atmosphere

  • Option C

    Internal energy of the ice-water system decreases

  • Option D

    Internal energy of the ice-water system remains unchanged

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• NumericeasyWave Opticsinterferece of light and huygen principle

  Two coherent monochromatic light beams of intensities 4I and 9I are superimposed. If the difference between maximum and minimum intensities in the interference pattern is xI, find x.

  Your answer

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• IntegermediumGravitationGravitation, Gravitational Field & Potential Energy

  Three identical spheres of mass m are placed at the vertices of an equilateral triangle of side a. Starting from rest, they interact only through mutual gravitation and collide after 4 s. If the side is changed to 2a and each mass is changed to 2m, after how many seconds will they collide?

  Your answer

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• MCQmediumKinematics Part-1 (one dimension)Ghraphical problem of kinematics

  Four curves A, B, C and D are shown in the original figure as possible representations of one-dimensional motion. Which set of curves is physically possible?

  

  Options

  • Option A

    A, B and C only

  • Option B

    A, B and D only

  • Option C

    A and B only

  • Option D

    A, C and D only

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• MCQeasyUnit dimension and errorDimension and its application

  Match List-I with List-II. List-I: (A) Gravitational constant, (B) Gravitational potential energy, (C) Gravitational potential, (D) Acceleration due to gravity. List-II: (I) [LT⁻²], (II) [L²T⁻²], (III) [ML²T⁻²], (IV) [M⁻¹L³T⁻²]. Choose the correct match.

  Options

  • Option A

    A–III, B–II, C–I, D–IV

  • Option B

    A–I, B–III, C–IV, D–II

  • Option C

    A–IV, B–III, C–II, D–I

  • Option D

    A–II, B–IV, C–III, D–I

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• MCQmediumFluid Mechanicsequation of continuity and bornullie theorem

  A completely full cylindrical water tank has height 1.6 m and cross-sectional area 0.5 m². A small hole is present in its side at a height 0.9 m from the bottom. A load of 50 kg is applied on the top surface of water. Take g = 10 m/s² and water density ρ = 1000 kg/m³. The speed of efflux immediately after opening the hole is:

  Options

  • Option A

    5 m/s

  • Option B

    4 m/s

  • Option C

    3 m/s

  • Option D

    2 m/s

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• MCQeasysemiconductorlogic gate

  Choose the correct logic circuit for the truth table shown in the original figure, where the output Y is 0 for inputs 00 and 01, and 1 for inputs 10 and 11.

  Options

  • Option A

    
  • Option B

    
  • Option C

    
  • Option D

    

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• MCQmediumThermodynamicsthermodynmic process and work done

  A gas is enclosed in a thermally insulating container. Initially its volume is 800 cm³ and temperature is 27°C. It is adiabatically compressed to 200 cm³. Take γ = 1.5. The change in temperature is:

  Options

  • Option A

    327 K

  • Option B

    300 K

  • Option C

    600 K

  • Option D

    522 K

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