Re-NEET 2026 physics questions with solutions

Showing 1–10 of 44 questions

• MCQeasyMixed Chapter

  A long solenoid has length ℓ, radius r, and n turns per unit length. If μ₀ is the permeability of free space, what is its self-inductance?

  Options

  • Option A

    μ₀πn²r²ℓ

  • Option B

    μ₀n²r²ℓ

  • Option C

    (μ₀n²r²ℓ)/(2π)

  • Option D

    2μ₀πn²r²ℓ

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• MCQeasyMixed Chapter

  A floating cylindrical cork of fixed mass and cross-sectional area performs small vertical SHM in a liquid of density ρ₁ with period T. In another liquid of density ρ₂ it oscillates with period 2T. Find ρ₂/ρ₁.

  Options

  • Option A

    4

  • Option B

    2

  • Option C

    1/2

  • Option D

    1/4

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• MCQmediumMixed Chapter

  Water flows steadily through a horizontal pipe: cross-sectional areas at P and Q are 40 cm² and 20 cm². The pressure at P exceeds that at Q by 15 N m⁻². Water density is 1000 kg m⁻³. Find the volume flow rate in cm³ s⁻¹. Image

  Options

  • Option A

    100

  • Option B

    200

  • Option C

    300

  • Option D

    400

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• MCQeasyMixed Chapter

  Bob B of mass m hangs initially at rest on a light string of length 10 m. Another point mass A of equal mass m strikes B horizontally at 10 m s⁻¹ in a perfectly elastic head-on collision. Bob B subsequently rises by height h. Take g = 10 m s⁻². Find h. Image

  Options

  • Option A

    8 m

  • Option B

    7 m

  • Option C

    5 m

  • Option D

    2.5 m

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• MCQmediumMixed Chapter

  Two circuits each contain resistors whose temperature coefficients are +α and -α, both initially R₀. Circuit A has them in series and circuit B has them in parallel, both on fixed-voltage supplies. What happens to currents Iₐ and Iᵦ as the temperature rises? Image

  Options

  • Option A

    Iₐ stays constant while Iᵦ increases

  • Option B

    Iₐ decreases while Iᵦ increases

  • Option C

    Iₐ increases while Iᵦ decreases

  • Option D

    Both Iₐ and Iᵦ remain constant

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• MCQmediumMixed Chapter

  A conducting loop of finite resistance R lies in the xy-plane in a uniform time-independent magnetic field B along z. Its area changes with time according to A(t) = A₀(1 + sin t). Which curve best represents power P dissipated as a function of t? Image (four power–time graphs)

  Options

  • Option A

    Power starts at zero, rises, and returns repeatedly to zero (Image-1)

  • Option B

    Power starts at a maximum, falls smoothly to zero, then rises (Image-2)

  • Option C

    Power is constant (Image-3)

  • Option D

    Power increases monotonically (Image-4)

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• MCQmediumMixed Chapter

  A unit positive test charge is slowly moved from point A at distance 2R to point B at distance 3R from the centre of a uniformly positively charged dielectric sphere of radius R and volume charge density ρ. Its path passes through a thin tube in the sphere, as shown. The magnitude of work is ρR²/(nε₀). Find n. Image

  Options

  • Option A

    2

  • Option B

    6

  • Option C

    9

  • Option D

    18

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• MCQmediumMixed Chapter

  Two equal point masses (each 1 unit) move with equal constant angular speed in opposite directions on a frictionless circular wire of unit radius. They start together at A (θ = π/2) and meet again at B (θ = -π/2). Which graph shows the magnitude P of their total linear momentum as θ changes? Image (four plots)

  Options

  • Option A

    A constant positive P (Image-1)

  • Option B

    P starts high, falls to zero midway and rises again (Image-2)

  • Option C

    P starts at zero, rises to a maximum midway and returns to zero (Image-3)

  • Option D

    P decreases linearly from a positive initial value (Image-4)

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• MCQeasyMixed Chapter

  For a planet in a circular orbit of radius R around the same central star, how does orbital period T depend on R?

  Options

  • Option A

    T ∝ R¹ᐟ²

  • Option B

    T ∝ R³ᐟ²

  • Option C

    T ∝ R²

  • Option D

    T ∝ R³

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• MCQeasyMixed Chapter

  One mole of an ideal monatomic gas (γ = 5/3) expands adiabatically and cools from 60 K to 50 K. Find the work done by the gas. Take R = 8.3 J mol⁻¹ K⁻¹.

  Options

  • Option A

    41.5 J

  • Option B

    83 J

  • Option C

    124.5 J

  • Option D

    166 J

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