JEE Mains 2025 7 April Evening Shift physics questions with solutions

Showing 1–10 of 25 questions

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

  An inductor of reactance 100 Ω, a capacitor of reactance 50 Ω and a resistor of resistance 50 Ω are connected in series to a 10 V rms AC source. Find the average power dissipated in watts.

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

  A capillary tube of radius 0.1 mm is partly dipped in water. Surface tension is 70 dyn/cm, contact angle is 0°, and the tube is inclined at 30° with the vertical. Take g = 9.8 m/s². The length of the water column along the capillary is:

  Options

  • Option A

    82/5 cm

  • Option B

    57/2 cm

  • Option C

    71/5 cm

  • Option D

    68/5 cm

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• MCQeasyNuclear physicsNuclear Properties, Mass Defect & Binding Energy

  Assertion (A): The density of a copper-64 nucleus is greater than the density of a carbon-12 nucleus. Reason (R): Nuclear radius is proportional to $\left(A^{\frac13}\right)$ where A is the mass number. Choose the correct answer.

  Options

  • Option A

    A is correct but R is false

  • Option B

    A is false but R is correct

  • Option C

    Both A and R are correct and R correctly explains A

  • Option D

    Both A and R are correct but R does not explain A

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• MCQmediumGravitationSatellites, Orbital Motion & Kepler’s Laws

  Assertion (A): The radius vector from the Sun to a planet sweeps out equal areas in equal intervals of time, so the planet's areal velocity is constant. Reason (R): In a central-force field, angular momentum is conserved. Choose the correct answer.

  Options

  • Option A

    Both A and R are correct and R is the correct explanation of A

  • Option B

    Both A and R are correct but R is not the correct explanation of A

  • Option C

    A is correct but R is false

  • Option D

    A is false but R is correct

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• MCQeasyWork , Power and EnergyConservative Forces & Potential Energy

  Which force cannot be expressed in terms of a potential-energy function?

  Options

  • Option A

    Coulomb force

  • Option B

    Gravitational force

  • Option C

    Frictional force

  • Option D

    Restoring force

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• MCQmediumNewtons law of motion and FrictionNewton's Second Law & Applications

  An object of mass 500 g moves along the x-axis with speed v = 4√x m/s. The magnitude of the force acting on it is:

  Options

  • Option A

    8 N

  • Option B

    5 N

  • Option C

    6 N

  • Option D

    4 N

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

  Match List-I with List-II. List-I: (A) Mass density, (B) Impulse, (C) Power, (D) Moment of inertia. List-II: (I) [ML²T⁻³], (II) [MLT⁻¹], (III) [ML²], (IV) [ML⁻³]. Choose the correct match.

  Options

  • Option A

    A–IV, B–II, C–III, D–I

  • Option B

    A–I, B–III, C–IV, D–II

  • Option C

    A–IV, B–II, C–I, D–III

  • Option D

    A–II, B–III, C–IV, D–I

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• MCQmediumPhotoelectric effect and dual natureDual Nature of Matter & de Broglie Wavelength

  A photo-emissive substance is illuminated by radiation of wavelength λᵢ and emits electrons with de Broglie wavelength λₑ. The longest wavelength that can cause photoemission is λ₀. Which expression for λₑ is correct?

  Options

  • Option A

    √{h/[2mc(1/λᵢ - 1/λ₀)]}

  • Option B

    √(hλ₀/2mc)

  • Option C

    h/√[2mc(1/λᵢ - 1/λ₀)]

  • Option D

    √(hλᵢ/2mc)

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• MCQeasyGeometrical opticsLaws of Refraction & Total Internal Reflection

  Assertion (A): The refractive index of glass is greater than that of air. Reason (R): Optical density is directly proportional to mass density, which causes a proportional refractive index. Choose the correct answer.

  Options

  • Option A

    A is false but R is true

  • Option B

    Both A and R are true and R explains A

  • Option C

    A is true but R is false

  • Option D

    Both A and R are true but R does not explain A

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• MCQmediumGeometrical opticsSpherical Mirrors & Image Formation

  A mirror forms an image with magnification 1/4. The distance between the object and image is 40 cm. The focal length of the mirror is:

  Options

  • Option A

    10 cm

  • Option B

    12.7 cm

  • Option C

    10.7 cm

  • Option D

    15 cm

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