JEE Mains 2024 31 Jan Evening Shift physics questions with solutions

Showing 1–10 of 29 questions

• MCQmediumsemiconductorlogic gate

  The output of the given circuit diagram is

  

  Options

  • Option A

    A B Y

    0 0 0

    1 0 0

    0 1 0

    1 1 1

  • Option B

    A B Y

    0 0 0

    1 0 1

    0 1 1

    1 1 0

  • Option C

    A B Y

    0 0 0

    1 0 0

    0 1 0

    1 1 0

  • Option D

    A B Y

    0 0 0

    1 0 0

    0 1 1

    1 1 0

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• MCQeasyElectrostaticelectric charge and coulamb's law

  Force between two point charges q₁ and q₂ placed in vacuum at ‘r’ cm apart is F. Force between them when placed in a medium having dielectric K = 5 at ‘r/5’ cm apart will be:

  Options

  • Option A

    F/25

  • Option B

    5F

  • Option C

    F/5

  • Option D

    25F

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• MCQeasyNuclear physicsNucles and its density radius and mass defect ,binding energy and its curve

  The mass number of nucleus having radius equal to half of the radius of nucleus with mass number 192 is:

  Options

  • Option A

    24

  • Option B

    32

  • Option C

    40

  • Option D

    20

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• NumericmediumCurrent electricityCells, Maximum Power & Heating Effect

  In the following circuit, the battery has an emf of 2 V and an internal resistance of 2/3 Ω. The power consumption in the entire circuit is ______ W.

  

  Your answer

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• MCQeasyWave Motionsound wave and its general equation and velocity

  The speed of sound in oxygen at S.T.P. will be approximately: (Given, R = 8.3 J K⁻¹, γ = 1.4)

  Options

  • Option A

    310 m/s

  • Option B

    333 m/s

  • Option C

    341 m/s

  • Option D

    325 m/s

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• MCQeasyThermodynamicskinetic therory of gaseous

  A gas mixture consists of 8 moles of argon and 6 moles of oxygen at temperature T. Neglecting all vibrational modes, the total internal energy of the system is

  Options

  • Option A

    29 RT

  • Option B

    20 RT

  • Option C

    27 RT

  • Option D

    21 RT

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• MCQmediumAC Circuitsavg value and rms value of ac

  An AC voltage V = 20 sin 200πt is applied to a series LCR circuit which drives a current I = 10 sin(200πt + π/3). The average power dissipated is:

  Options

  • Option A

    21.6 W

  • Option B

    200 W

  • Option C

    173.2 W

  • Option D

    50 W

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• MCQmediumUnit dimension and errorDimension and its application

  Consider two physical quantities A and B related to each other as E = (B - x²)/(At), where E, x and t have dimensions of energy, length and time respectively. The dimension of AB is

  Options

  • Option A

    L²M¹T⁰

  • Option B

    L²M⁻¹T¹

  • Option C

    L²M⁻¹T⁻¹

  • Option D

    L⁰M⁻¹T¹

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• NumericmediumGeometrical opticsrefraction due to curved surface

  Light from a point source in air falls on a convex curved surface of radius 20 cm and refractive index 1.5. If the source is located at 100 cm from the convex surface, the image will be formed at____ cm from the object.

  Your answer

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• NumericeasyNuclear physicsNucles and its density radius and mass defect ,binding energy and its curve

  A nucleus has mass number A₁ and volume V₁. Another nucleus has mass number A₂ and volume V₂. If relation between mass number is A₂ = 4A₁, then V₂/V₁ = ________.

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