JEE Mains 2026 4 April Evening Shift physics questions with solutions

Showing 1–10 of 24 questions

• MCQeasyGeometrical opticsLenses, Lens Combinations & Silvered Lenses

  A symmetric biconvex lens is made of glass of refractive index 1.4. The two spherical surfaces have equal radius of curvature R in magnitude. What is the ratio f / R, where f is the focal length of the lens in air?

  Options

  • Option A

    0.5

  • Option B

    2.5

  • Option C

    0.8

  • Option D

    1.25

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

  Match the physical quantities in List I with their dimensional formulae in List II.

  List I:
  A. Planck's constant
  B. Stopping potential
  C. Work function
  D. Threshold frequency

  List II: I. [M L² T⁻²] II. [T⁻¹] III. [M L² T⁻¹] IV. [M L² T⁻³ A⁻¹]

  Choose the correct matching.

  Options

  • Option A

    A–III, B–IV, C–I, D–II

  • Option B

    A–I, B–II, C–III, D–IV

  • Option C

    A–IV, B–III, C–I, D–II

  • Option D

    A–I, B–IV, C–III, D–II

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• MCQmediumWave OpticsPolarisation of Light

  Unpolarized light of intensity I₀ first passes through a polarizer whose transmission axis is at 30° to the horizontal and then through an analyser whose axis is at 90°. A third polarizer with axis at 60° is inserted between them. What is the ratio of the output intensity with the third polarizer to the output intensity without it?

  Options

  • Option A

    3 / 4

  • Option B

    4 /3

  • Option C

    9 / 4

  • Option D

    4 /9

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

  An electron and a proton are each accelerated from rest through the same potential difference V. Their de Broglie wavelengths are λₑ and λₚ, and their masses are mₑ and mₚ. Neglect relativistic effects. What is λₑ / λₚ?

  Options

  • Option A

    √(mₚ /mₑ)

  • Option B

    √(mₑ / mₚ)

  • Option C

    mₚ / mₑ

  • Option D

    (mₚ /mₑ)²

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

  At t = 0, a body of mass 100 g starts from rest under the action of a constant force F = (5î+10ĵ) N. After 2 s, its position vector is r = (2x î+5y ĵ) m. What is the ratio x:y?

  Options

  • Option A

    1:2

  • Option B

    2:5

  • Option C

    5:2

  • Option D

    5:4

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• MCQmediumSimple Harmonic MotionPhysical Pendulum, Torsional Pendulum and Superposition of SHM

  A uniform disc of mass M and radius R can oscillate in its own plane about a fixed horizontal axis passing through a point A on its rim, as shown in the figure. For small angular oscillations under gravity, what is its time period?

  

  Options

  • Option A

    2π√[5R / (4g)]

  • Option B

    2π√[2R / (3g)]

  • Option C

    2π√[3R / (2g)]

  • Option D

    2π√(3R / g)

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• A/RmediumCapacitorCapacitors with Dielectrics

  Choose the correct option for the following Assertion (A) and Reason (R).

  Assertion

  In electrostatic equilibrium, a conductor does not store any net excess charge in its interior bulk.

  Reason

  In the region between the plates of a capacitor containing no dielectric, a free charge carrier placed in the electric field experiences a force and drifts.

  Options

  • Option A

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

  • Option B

    Both A and R are true but R is NOT the correct explanation of A.

  • Option C

    A is true but R is false.

  • Option D

    A is false but R is true.

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

  A metal string A is suspended from a rigid support and supports a block of mass M. A second block of mass 2M is suspended below the first block by another string B. The two strings have equal cross-sectional area. The ratio of their lengths is L(A):L(B) = 2:1, and their Young's moduli satisfy Y(A) /Y(B) = 0.5. What is the ratio of their elongations ΔL(A) / ΔL(B)?

  Options

  • Option A

    1

  • Option B

    4

  • Option C

    8

  • Option D

    6

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

  A gun mounted at ground level can fire bullets in any direction with the same launch speed. The maximum horizontal range attainable by a bullet is 6.4 m. Taking g = 10 m·s⁻², if the launch speed is N m·s⁻¹, find N.

  Your answer

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• MCQmediumThermodynamicsThermal Expansion of Solids and Liquids

  A metal strip has coefficient of linear expansion α. Its temperature is first increased from T₁ to T₂, causing its length to increase by ΔL₁. It is then heated from T₂ to T₃, causing an additional increase ΔL₂. Given T₃+T₁ = 2T₂ and T₂-T₁ = ΔT, which expression gives ΔL₂ according to the finite-step expansion treatment used in the source solution?

  Options

  • Option A

    ΔL₁[1+2α²(ΔT)²]

  • Option B

    ΔL₁[1+α²(ΔT)²]

  • Option C

    ΔL₁[1+2αΔT]

  • Option D

    ΔL₁[1+αΔT]

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