JEE Mains 2025 8 April Evening Shift (Shift 2) physics questions with solutions

Showing 1–10 of 25 questions

• MCQeasyThermodynamicsHeat, Specific Heat Capacity, Latent Heat and Calorimetry

  Water falls from a height of 200 m into a pool. Assuming no heat is lost, find the rise in temperature of the water. Take g = 10 m s⁻² and specific heat of water s = 4200 J kg⁻¹ K⁻¹.

  Options

  • Option A

    0.23 K

  • Option B

    0.36 K

  • Option C

    0.14 K

  • Option D

    0.48 K

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

  A liquid initially at 1 atm is compressed to 5 atm and its volume decreases by 0.8 cm³. Its bulk modulus is 2 GPa. Take 1 atm = 10⁵ Pa. Find the initial volume in litres.

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• MCQmediumWave OpticsYoung's Double-Slit Experiment (YDSE)

  In Young's double-slit experiment, white light is used. One slit is covered with a red filter and the other with a green filter. What is observed?

  Options

  • Option A

    Separate red and green interference patterns are formed

  • Option B

    No stable interference fringes are formed

  • Option C

    Alternate red and green interference fringes are formed

  • Option D

    Each fringe has a green centre and red outer edges

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

  An electron is released from rest near an infinite non-conducting sheet of uniform surface charge density -σ. The magnitude of the rate of change of its de Broglie wavelength varies as 1/tⁿ. Find n.

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• MCQeasyElectrostaticConductors & Electrostatic Properties

  Two isolated conducting spheres of radii R and 3R initially have the same surface charge density σ. They are brought into contact and then separated. If the final surface charge densities on the smaller and larger spheres are σ₁ and σ₂ respectively, the ratio σ₁/σ₂ is:

  Options

  • Option A

    1/9

  • Option B

    9

  • Option C

    1/3

  • Option D

    3

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• MCQmediumMagnetic effect of currentBiot-Savart Law and Magnetic Field Due to Straight Wires, Circular Arcs and Loops

  A current I enters a square loop ABCD of side a at A and leaves at C. Resistance of path ABC is r, while resistance of path ADC is 2r. The magnitude of the magnetic field at the centre of the square is:

  

  Options

  • Option A

    3πμ₀I/(√2a)

  • Option B

    μ₀I/(2πa)

  • Option C

    √2μ₀I/(3πa)

  • Option D

    2μ₀I/(3πa)

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• MCQmediumElectrostaticElectric Flux & Gauss’s Law

  An infinitely long wire has uniform linear charge density λ = 2 nC/m. It passes through two maximally separated corners of a Gaussian cube of side √3 cm. Neglect edge effects. If the net electric flux is x N m² C⁻¹ and 1/(4πε₀) = 9×10⁹ SI units, then x is:

  Options

  • Option A

    0.72π

  • Option B

    1.44π

  • Option C

    6.48π

  • Option D

    2.16π

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• IntegermediumRotational MotionTorque & Rotational Equilibrium

  A thin solid disc of mass 1 kg rotates about a diameter at 1800 rpm. A constant external torque 25π N·m acts for 40 s, increasing its speed to 2100 rpm. Find the diameter of the disc in metres.

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• MCQmediumWork , Power and EnergyKinetic Energy & Work-Energy Theorem

  A 2 kg block is attached to a spring of natural length 2 m and spring constant 200 N/m on a frictionless horizontal table. The spring is compressed to length 1 m and released. When the block is at distance x m from the wall, with x < 2, its speed is:

  Options

  • Option A

    10[1-(2-x)]³⁄² m/s

  • Option B

    10√[1-(2-x)²] m/s

  • Option C

    10[1-(2-x)²] m/s

  • Option D

    10[1-(2-x)²]² m/s

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• MCQeasyKinematics part-2 Projectile MotionMotion in 2-D and ground to ground projectile

  Two balls are projected with the same initial speed at different angles. The maximum height of the first is 8 times that of the second. If their times of flight are T₁ and T₂, then T₁:T₂ is:

  Options

  • Option A

    2√2:1

  • Option B

    2:1

  • Option C

    √2:1

  • Option D

    4:1

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