JEE Mains 2025 24 Jan Morning Shift physics questions with solutions

Showing 1–10 of 20 questions

• MCQeasyAC Circuitsavg value and rms value of ac

  If I=$I_A$ sinωt + $I_B$ cosωt, the rms value of current is:

  Options

  • Option A

    $I_A+I_B$

  • Option B

    √($I_A²+I_B²)$

  • Option C

    √[($I_A²+I_B²)/2]$

  • Option D

    (1/2)√($I_A²+I_B²)$

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• IntegermediumProperties of solid and fluidproperties of fluid and surface tension

  Work required to break a liquid drop of radius R into 27 equal drops is 10 J. The work required to break the same drop into 64 equal drops is:

  Your answer

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• MCQmediumGravitationSatellites, Orbital Motion & Kepler’s Laws

  Satellite A is in a circular orbit of radius R. Satellite B is in a circular orbit of radius 1.03R. The time period of B is greater than that of A by approximately:

  Options

  • Option A

    9%

  • Option B

    4.5%

  • Option C

    3%

  • Option D

    2.5%

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• MCQeasyCapacitorconnecting of capacitor with battery,connenctiong of two capacitor

  A parallel-plate capacitor has plate area A, separation d and electric field E between the plates. Its stored energy is:

  Options

  • Option A

    (1/2)ε₀E²Ad

  • Option B

    (1/4)ε₀E²Ad

  • Option C

    ($\frac{3}{4}$)ε₀E²Ad

  • Option D

    ε₀E²Ad

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• IntegereasyWork , Power and Energyquestion based on work

  A particle moves along a straight line under force F=α+βx², where β=-12 SI units. If the work done from x=0 to x=1 m is 12 J, α is:

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• MCQmediumRotational Motionangular momentum in pure rotation and its conservation

  A body of mass m is projected with speed v₀ at 45° to the horizontal. Its angular momentum about the point of projection at the highest point is:

  Options

  • Option A

    mv₀³/(4g)

  • Option B

    mv₀³/(4√2 g)

  • Option C

    mv₀²/(4√2 g)

  • Option D

    mv₀³/(2√2 g)

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• MCQeasyThermodynamicsthermodynmic process and work done

  For an ideal gas, pressure is directly proportional to absolute temperature during a process. Statements: A: process is isochoric; B: work done is zero; C: internal energy increases when temperature increases. Choose the correct option.

  Options

  • Option A

    A and B are correct

  • Option B

    A and C are correct

  • Option C

    A, B and C are correct

  • Option D

    B and C are correct

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• IntegermediumMagnetic effect of currentbiot savart law and magnetic field due to straight conductor ,arc and ring

  A square current loop of side 1/√2 m carries current 5 A. The magnetic field at its centre, in μT, is:

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• IntegermediumElectrostaticelectric flux and gauss law

  A point charge Q is at distance a/2 above a square plate of side a as shown. The electric flux through the shaded region is NQ/(48ε₀). Find N.

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• MCQmediumSimple Harmonic Motiondisplacement ,velocity and acceleration ,phasor diagram

  In SHM x=A sinωt with time period 2 s and amplitude 1 cm, the ratio distance/displacement magnitude during the first 1.25 s is:

  Options

  • Option A

    2√2+1

  • Option B

    2√2-1

  • Option C

    1/√2

  • Option D

    1/(2√2)

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