JEE Mains 2024 04 Apr Morning Shift physics questions with solutions

Showing 1–10 of 30 questions

• MCQeasyMagnetic effect of currentMotion of Charged Particles in a Magnetic Field

  An electron is projected with uniform velocity along the axis inside a current carrying long solenoid. Then:

  Options

  • Option A

    the electron will be accelerated along the axis.

  • Option B

    the electron will continue to move with uniform velocity along the axis of the solenoid.

  • Option C

    the electron path will be circular about the axis.

  • Option D

    the electron will experience a force at 45° to the axis and execute a helical path.

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• MCQeasyWork , Power and EnergyConservation of Mechanical Energy

  If a rubber ball falls from a height h and rebounds upto the height of h/2. The percentage loss of total energy of the initial system as well as velocity ball before it strikes the ground, respectively, are:

  Options

  • Option A

    50%, √(gh/2)

  • Option B

    50%, √(gh)

  • Option C

    40%, √(2gh)

  • Option D

    50%, √(2gh)

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• MCQeasyThermodynamicsKinetic Theory of Gases and Molecular Properties

  P-T diagram of an ideal gas having three different densities ρ₁, ρ₂, ρ₃ (in three different cases) is shown in the figure. Which of the following is correct:

  

  Options

  • Option A

    ρ₂ < ρ₃

  • Option B

    ρ₁ > ρ₂

  • Option C

    ρ₁ < ρ₂

  • Option D

    ρ₁ = ρ₂ = ρ₃

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

  Two wavelengths λ₁ and λ₂ are used in Young's double slit experiment λ₁ = 450 nm and λ₂ = 650 nm. The minimum order of fringe produced by λ₂ which overlaps with the fringe produced by λ₁ is n. The value of n is ____.

  Your answer

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• MCQmediumElectromagnetic waveDisplacement Current, Maxwell's Equations and Properties of Electromagnetic Waves

  The electric field in an electromagnetic wave is given by $\vec{E}$ = 40 cos[ω(t - z/c)] î N C⁻¹. The magnetic field induction of this wave is (in SI unit):

  Options

  • Option A

    $\vec{B}$ = (40/c) cos[ω(t - z/c)] î

  • Option B

    $\vec{B}$ = 40 cos[ω(t - z/c)] ĵ

  • Option C

    $\vec{B}$= (40/c) cos[ω(t - z/c)] k̂

  • Option D

    $\vec{B}$ = (40/c) cos[ω(t - z/c)] ĵ

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• MCQmediumKinematics Part-1 (one dimension)Motion under constant acceleration

  A body travels 102.5 m in nth second and 115.0 m in (n + 2)th second. The acceleration is:

  Options

  • Option A

    9 m/s²

  • Option B

    6.25 m/s²

  • Option C

    12.5 m/s²

  • Option D

    5 m/s²

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• MCQmediumElectrostaticElectric Field & Superposition Principle

  An infinitely long positively charged straight thread has a linear charge density λ C m⁻¹. An electron revolves along a circular path having axis along the length of the wire. The graph that correctly represents the variation of the kinetic energy of electron as a function of radius of circular path from the wire is:

  Options

  • Option A

    
  • Option B

    
  • Option C

    
  • Option D

    

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• MCQeasyGeometrical opticsLenses, Lens Combinations & Silvered Lenses

  An effective power of a combination of 5 identical convex lenses which are kept in contact along the principal axis is 25 D. Focal length of each of the convex lens is:

  Options

  • Option A

    20 cm

  • Option B

    50 cm

  • Option C

    500 cm

  • Option D

    25 cm

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• MCQeasyCurrent electricityElectric Current, Drift Velocity & Resistance

  The resistances of the platinum wire of a platinum resistance thermometer at the ice point and steam point are 8 Ω and 10 Ω respectively. After inserting in a hot bath of temperature 400°C, the resistance of platinum wire is:

  Options

  • Option A

    2 Ω

  • Option B

    16 Ω

  • Option C

    8 Ω

  • Option D

    10 Ω

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• MCQmediumGravitationGravitation, Gravitational Field & Potential Energy

  A metal wire of uniform mass density having length L and mass M is bent to form a semicircular arc and a particle of mass m is placed at the centre of the arc. The gravitational force on the particle by the wire is:

  Options

  • Option A

    πGMm/(2L²)

  • Option B

    0

  • Option C

    π²GmM/L²

  • Option D

    2πGmM/L²

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