JEE Mains 2024 04 Apr Evening Shift physics questions with solutions

Showing 1–10 of 30 questions

• MCQeasyThermodyanmicskinetic therory of gaseous

  The translational degrees of freedom (f(trans)) and rotational degrees of freedom (f(rot)) of CH₄ molecule are:

  Options

  • Option A

    f(trans) = 2 and f(rot) = 2

  • Option B

    f(trans) = 3 and f(rot) = 3

  • Option C

    f(trans) = 3 and f(rot) = 2

  • Option D

    f(trans) = 2 and f(rot) = 3

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• MCQmediumThermodyanmicsthermodynmic process and work done

  A sample of gas at temperature T is adiabatically expanded to double its volume. Adiabatic constant for the gas is γ = 3/2. The work done by the gas in the process is: (μ = 1 mole)

  Options

  • Option A

    RT(2 - √2)

  • Option B

    RT(1 - √2)

  • Option C

    RT(√2 - 1)

  • Option D

    RT(2 - √2)

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• MCQeasyAtomic Structure and X-raysatomic structure and bohr atomic model

  According to Bohr's theory, the moment of momentum of an electron revolving in 4th orbit of hydrogen atom is:

  Options

  • Option A

    h/(8π)

  • Option B

    h/π

  • Option C

    2h/π

  • Option D

    h/(2π)

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• MCQeasySimple Harmonic Motionkinetic and potential energy in shm

  In simple harmonic motion, the total mechanical energy of given system is E. If mass of oscillating particle P is doubled then the new energy of the system for same amplitude is:

  

  Options

  • Option A

    E/√2

  • Option B

    E

  • Option C

    E√2

  • Option D

    2E

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• NumericmediumNuclear physicsnuclear fission and fusion ,nuclear reactor

  The disintegration energy Q for the nuclear fission of ²³⁵U → ¹⁴⁰Ce + ⁹⁴Zr + n is ______ MeV.

  Given atomic masses: ²³⁵U = 235.0439 u, ¹⁴⁰Ce = 139.9054 u, ⁹⁴Zr = 93.9063 u, n = 1.0086 u, c² = 931 MeV/u.

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• MCQeasysemiconductorP-N jucntion and diode in reverse and forward bias

  Which of the diode circuit shows correct biasing used for the measurement of dynamic resistance of p-n junction diode:

  Options

  • Option A

    
  • Option B

    
  • Option C

    
  • Option D

    

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

  A bus moving along a straight highway with speed of 72 km/h is brought to halt within 4s after applying the brakes. The distance travelled by the bus during this time (Assume the retardation is uniform) is ______ m.

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• NumericmediumGeometrical opticsapperant depth and shift due to slab

  A light ray is incident on a glass slab of thickness 4√3 cm and refractive index √2. The angle of incidence is equal to the critical angle for the glass slab with air. The lateral displacement of ray after passing through glass slab is ______ cm. (Given sin15° = 0.25)

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• NumericeasySimple Harmonic Motiondisplacement ,velocity and acceleration ,phasor diagram

  The displacement of a particle executing SHM is given by x = 10 sin(ωt + π/3) m. The time period of motion is 3.14 s. The velocity of the particle at t = 0 is ______ m/s.

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• NumericeasyElectromagnetic Inductionmotional emf and induced emf in rotating rod

  A rod of length 60 cm rotates with a uniform angular velocity 20 rad s⁻¹ about its perpendicular bisector, in a uniform magnetic field 0.5 T. The direction of magnetic field is parallel to the axis of rotation. The potential difference between the two ends of the rod is ______ V.

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