JEE Mains 2026 4 April Evening Shift physics questions with solutions

Showing 1–10 of 24 questions

• MCQmediumProperties of solid and fluidpropertes of solid stress ,strain and modulus of elasticity

  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

  Check answerShow answer

  JEE Mains 2026 4 April Evening Shift

  Open question & full solution →
• MCQeasyUnit dimension and errorDimension and its application

  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

  Check answerShow answer

  JEE Mains 2026 4 April Evening Shift

  Open question & full solution →
• NumericmediumWave Opticsyoung's dubble slit experiments

  In a Young double-slit experiment, a transparent mica sheet of refractive index 1.56 is placed in front of one slit. The central fringe shifts to the position originally occupied by the 7th bright fringe when both slits were uncovered. If the wavelength is 450 nm and the sheet thickness is α×10⁻⁹ m, find α.

  Your answer

  Check answerShow answer

  JEE Mains 2026 4 April Evening Shift

  Open question & full solution →
• MCQmediumElectromagnetic wavedisplacement current and properties of electromagnetic wave

  The magnetic field of a plane electromagnetic wave is

  B = B₀ sin[2πνt-(2πx / λ)] ĵ.

  The wave propagates in the +x direction through a medium in which the wave speed is νλ. Which expression gives the associated electric field?

  Options

  • Option A

    E = -νλB₀ sin[2πνt-(2πx / λ)] k̂

  • Option B

    E = -νλB₀ sin[2πνt-(2πx / λ)] î

  • Option C

    E = +νλB₀ sin[2πνt-(2πx / λ)] k̂

  • Option D

    E = +νλB₀ sin[2πνt-(2πx / λ)] î

  Check answerShow answer

  JEE Mains 2026 4 April Evening Shift

  Open question & full solution →
• MCQmediumAtomic Structure and X-raysatomic structre and bohr atomic model

  In Rutherford's α-particle scattering experiment, only a very small fraction of incident α-particles rebound or undergo very large-angle scattering. Consider the following statements.

  A. The gold nucleus is extremely small compared with the size of the atom.
  B. An α-particle and a gold nucleus carry equal positive charge.
  C. Only a few α-particles have very small impact parameter.
  D. Only a few α-particles have exceptionally large kinetic energy. E. Only a few α-particles undergo nearly head-on collisions with nuclei.

  Which statements correctly explain the observation?

  Options

  • Option A

    A and B only

  • Option B

    B and E only

  • Option C

    C and D only

  • Option D

    A, C and E only

  Check answerShow answer

  JEE Mains 2026 4 April Evening Shift

  Open question & full solution →
• MCQmediumThermodynamicsthermal expansion solid and liquid

  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]

  Check answerShow answer

  JEE Mains 2026 4 April Evening Shift

  Open question & full solution →
• MCQmediumWave Opticspolarisation

  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

  Check answerShow answer

  JEE Mains 2026 4 April Evening Shift

  Open question & full solution →
• MCQmediumSimple Harmonic Motionphysical pendulam and torsional pendulam ,combination 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)

  Check answerShow answer

  JEE Mains 2026 4 April Evening Shift

  Open question & full solution →
• MCQmediumElectrostaticelectric dipole and dipole moment

  A rigid electric dipole performs small angular oscillations about its centre in a uniform electric field E₁ = E₀î. A second field E₂ = 2E₀(ĵ+k̂) is then added. Approximately what is the percentage increase in the oscillation frequency?

  Options

  • Option A

    73%

  • Option B

    63%

  • Option C

    83%

  • Option D

    53%

  Check answerShow answer

  JEE Mains 2026 4 April Evening Shift

  Open question & full solution →
• MCQeasyFluid Mechanicsequation of continuity and bornullie theorem

  A water spray gun is connected to a hose of cross-sectional area 30 cm². The gun has 10 identical perforations, each of cross-sectional area 15 mm². Water flows in the hose with speed 50 cm·s⁻¹. Neglecting edge effects, what is the speed of water emerging from each perforation?

  Options

  • Option A

    100 m·s⁻¹

  • Option B

    10 m·s⁻¹

  • Option C

    1000 m·s⁻¹

  • Option D

    1.5×10³ m·s⁻¹

  Check answerShow answer

  JEE Mains 2026 4 April Evening Shift

  Open question & full solution →