JEE Advanced 2025 Paper 2 physics questions with solutions

Showing 1–10 of 16 questions

• NumericdifficultWave Motiondoppler effect

  An audio transmitter T and receiver R are suspended from identical 8 m strings. They are displaced in opposite horizontal directions by θ₀ = cos⁻¹(0.9) and released together. The transmitter frequency is 660 Hz and sound speed is 330 m s⁻¹. With g = 10 m s⁻², find the maximum variation in received frequency in hertz.

  

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• MCQdifficultCircular Motion

  A temperature difference can generate e. m. f. in some materials. Let S be the e. m. f. produced per unit temperature difference, σ the electrical conductivity and κ the thermal conductivity. Taking M, L, T, I and K as dimensions of mass, length, time, current and temperature, respectively, find the dimensional formula of Z = S²σ/κ.

  Options

  • Option A

    [M⁰L⁰T⁰I⁰K⁰]

  • Option B

    [M⁰L⁰T⁰I⁰K⁻¹]

  • Option C

    [M¹L²T⁻²I⁻¹K⁻¹]

  • Option D

    [M¹L²T⁻⁴I⁻¹K⁻¹]

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• Multi-correctdifficultCircular Motion

  Two identical concave mirrors of focal length f face each other. A glass slab of thickness t and refractive index n₀ is centered between them, and a monochromatic point source S is embedded at the slab center on the common axis. For the image to form on S itself, which mirror separations are correct? Image

  Select all that apply

  • Option A

    4f + (1 - 1/n₀)t

  • Option B

    2f + (1 - 1/n₀)t

  • Option C

    4f + (n₀ - 1)t

  • Option D

    2f + (n₀ - 1)t

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• MCQdifficultCircular Motion

  A uniform rod OO′ of length l is hinged at O. Two identical massless springs are attached as in Fig. 1: one at l/2 and one at l. In Fig. 2 both springs are attached at l/2. Ignoring gravity and for small angular oscillations, the frequencies are f₁ and f₂. Find f₁/f₂. Image

  Options

  • Option A

    2

  • Option B

    √2

  • Option C

    √(5/2)

  • Option D

    √(2/5)

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• NumericdifficultCircular Motion

  A conducting solid sphere of radius R and mass M carries charge Q and rotates with angular speed ω about a diameter. The ratio of magnetic dipole moment to angular momentum is αQ/(2M). Find α.

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• NumericdifficultCircular Motion

  A geostationary satellite orbits at radius r₁. A second satellite moves in the equatorial plane in the opposite direction at radius r₂, where r₁ = 1.21r₂. The period of the second satellite as measured from the geostationary satellite is 24/p hours. Find p.

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• NumericdifficultKinematics part-2 Projectile MotionGround to ground projectile

  A 200 g projectile is launched in a viscous medium at 60° with initial speed 270 m s⁻¹. It experiences linear drag F = -cv, where c = 0.1 kg s⁻¹. It hits a vertical wall after 2 s. Taking e = 2.7, find the horizontal distance of the wall from the point of projection in metres.

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• NumericdifficultCircular Motion

  An ideal monatomic gas of n moles follows the cycle WXYZW shown in the V-T diagram. Successive processes are adiabatic and isobaric. Volumes at W, X and Y are 64 cm³, 125 cm³ and 250 cm³. Given that nRT at W is 1 J, find the heat absorbed along XY in joules. Image

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• Multi-correctdifficultCircular Motion

  Six infinite non-conducting charged sheets are arranged in configurations I and II as shown. Adjacent sheets are 1 μm apart. If σ₀ = 9 μC m⁻² and ε₀ = 9 × 10⁻¹² F m⁻¹, which statements are correct? Image

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  • Option A

    In region 4 of configuration I, the electric-field magnitude is zero.

  • Option B

    In region 3 of configuration II, the electric-field magnitude is σ₀/ε₀.

  • Option C

    Potential difference between the first and last sheets of configuration I is 5 V.

  • Option D

    Potential difference between the first and last sheets of configuration II is zero.

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• Multi-correctdifficultCircular Motion

  A Carnot engine operates between a hot reservoir at 1000 K and a cold reservoir, with efficiency 0.4. It absorbs 150 J per cycle. Its entire work output runs a heat pump of coefficient of performance 10 whose hot reservoir is at 300 K. Which statements are correct?

  Select all that apply

  • Option A

    Work extracted from the Carnot engine in one cycle is 60 J.

  • Option B

    Temperature of the cold reservoir of the Carnot engine is 600 K.

  • Option C

    Temperature of the cold reservoir of the heat pump is 270 K.

  • Option D

    Heat supplied to the hot reservoir of the heat pump in one cycle is 540 J.

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