JEE Mains 2025 3 April Morning Shift physics questions with solutions

Showing 1–10 of 25 questions

• MCQmediumFluid MechanicsEquation of Continuity and Bernoulli's Principle

  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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• MCQmediumGeometrical opticsPrisms & Thin Prisms

  For refraction through a prism at minimum deviation, consider the statements: (A) the refracted ray inside the prism becomes parallel to the base; (B) a larger prism angle necessarily gives a smaller minimum deviation; (C) angle of incidence equals angle of emergence; (D) except at the minimum-deviation setting, there are generally two incidence angles giving the same deviation; (E) the angle of refraction becomes double the prism angle. Choose the correct set.

  Options

  • Option A

    B, C and D only

  • Option B

    A, B and E only

  • Option C

    A, C and D only

  • Option D

    B, D and E only

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• NumericeasyWave OpticsHuygens' Principle & Interference of Light

  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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• MCQmediumThermodynamicsThermodynamic Processes, P-V Diagrams 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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• MCQmediumSimple Harmonic MotionTime Period of Linear Simple Harmonic Motion

  Two blocks of masses m and M (M > m) are placed one over the other on a frictionless horizontal table. The lower block M is attached to a spring of constant k, and the coefficient of friction between the blocks is μ. The system is slightly displaced and released. Consider: (A) T = 2π√[(M+m)/k]; (B) a = -kx/(M+m); (C) the friction magnitude on the upper block is mμ|x|/(M+m); (D) maximum amplitude without slipping is μ(M+m)g/k; (E) maximum frictional force can be μ(M+m)g. Choose the correct set.

  

  Options

  • Option A

    C, D, E only

  • Option B

    A, B, C only

  • Option C

    A, B, D only

  • Option D

    B, C, D only

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• MCQmediumThermodynamicsThermodynamic Processes, P-V Diagrams and Work Done

  A piston of mass M is attached to a massless spring whose restoring force is F = -kx³. The piston separates a vertical chamber into two parts, and the lower part contains n moles of an ideal gas. The spring is initially at its natural length. The gas is heated isothermally at temperature T so that the piston rises from height L₀ to L₁. The total energy supplied by the heating filament is:

  

  Options

  • Option A

    nRT ln(L₁²/L₀²) + (Mg/2)(L₁-L₀) + (k/4)(L₁⁴-L₀⁴)

  • Option B

    nRT ln(L₁/L₀) + Mg(L₁-L₀) + (k/4)(L₁⁴-L₀⁴)

  • Option C

    3nRT ln(L₁/L₀) + 2Mg(L₁-L₀) + (k/3)(L₁³-L₀³)

  • Option D

    nRT ln(L₁/L₀) + Mg(L₁-L₀) + (3k/4)(L₁⁴-L₀⁴)

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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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• MCQeasyUnits, Dimensions, Measurements and ErrorsSignificant Figures and Rules of Rounding Off

  A person measures three masses as 435.42 g, 226.3 g and 0.125 g. According to the rules of significant figures, their sum should be reported as:

  Options

  • Option A

    661.845 g

  • Option B

    661.84 g

  • Option C

    661.8 g

  • Option D

    662 g

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• MCQeasyGeometrical opticsLenses, Lens Combinations & Silvered Lenses

  A thin convex lens has radii of curvature 10 cm and 15 cm. Its focal length is 12 cm. The refractive index of the lens material is:

  Options

  • Option A

    1.4

  • Option B

    1.5

  • Option C

    1.2

  • Option D

    1.8

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• MCQmediumGravitationGravitation, Gravitational Field & Potential Energy

  A particle is released from a height S above the surface of the Earth. At a certain height, its kinetic energy is three times its potential energy. The height from the surface of the Earth and the speed of the particle at that instant are respectively:

  Options

  • Option A

    S/2, 3gS/2

  • Option B

    S/4, 3gS/2

  • Option C

    S/4, √(3gS/2)

  • Option D

    S/2, √(3gS/2)

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