JEE Mains 2024 physics questions with solutions

Showing 1–10 of 30 questions

• NumericmediumSimple Harmonic MotionDisplacement, Velocity, Acceleration and Phasor Representation in SHM

  A particle executes simple harmonic motion with an amplitude of 4 cm. At the mean position, velocity of the particle is 10 cm/s. The distance of the particle from the mean position when its speed becomes 5 cm/s is √α cm, where α = ______.

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• MCQmediumCurrent electricityElectrical Instruments: Galvanometer, Ammeter, Voltmeter & Potentiometer

  A wire of length 10 cm and radius 7 × 10⁻⁴ m connected across the right gap of a meter bridge. When a resistance of 4.5 Ω is connected on the left gap by using a resistance box, the balance length is found to be at 60 cm from the left end. If the resistivity of the wire is R × 10⁻⁷ Ωm, then value of R is :

  Options

  • Option A

    63

  • Option B

    70

  • Option C

    66

  • Option D

    35

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• MCQeasyKinematics part-2 Projectile MotionMotion in 2-D and ground to ground projectile

  Position of an ant (S in metres) moving in Y-Z plane is given by $\vec{S}$ = 2t²ĵ + 5k̂ (where t is in second). The magnitude and direction of velocity of the ant at t = 1 s will be :

  Options

  • Option A

    16 m/s in y-direction

  • Option B

    4 m/s in x-direction

  • Option C

    9 m/s in z-direction

  • Option D

    4 m/s in y-direction

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• MCQeasyCenter of maas , Momentum and CollisionLinear Momentum & Its Conservation

  A body of mass 1000 kg is moving horizontally with a velocity 6 m/s. If 200 kg extra mass is added, the final velocity (in m/s) is:

  Options

  • Option A

    6

  • Option B

    2

  • Option C

    3

  • Option D

    5

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• MCQeasyCenter of maas , Momentum and CollisionLinear Momentum & Its Conservation

  Two bodies of mass 4 g and 25 g are moving with equal kinetic energies. The ratio of magnitude of their linear momentum is :

  Options

  • Option A

    3 : 5

  • Option B

    5 : 4

  • Option C

    2 : 5

  • Option D

    4 : 5

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• MCQmediumThermodynamicsKinetic Theory of Gases and Molecular Properties

  The average kinetic energy of a monatomic molecule is 0.414 eV at temperature : (Use Kᴮ = 1.38 × 10⁻²³ J/mol-K)

  Options

  • Option A

    3000 K

  • Option B

    3200 K

  • Option C

    1600 K

  • Option D

    1500 K

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• MCQeasyProperties of solid and fluidViscosity, Stokes' Law and Terminal Velocity

  Given below are two statements : Statement (I) : Viscosity of gases is greater than that of liquids. Statement (II) : Surface tension of a liquid decreases due to the presence of insoluble impurities. In the light of the above statements, choose the most appropriate answer from the options given below :

  Options

  • Option A

    Statement I is correct but statement II is incorrect

  • Option B

    Statement I is incorrect but Statement II is correct

  • Option C

    Both Statement I and Statement II are incorrect

  • Option D

    Both Statement I and Statement II are correct

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• NumericeasyProperties of solid and fluidElastic Properties of Solids: Stress, Strain and Elastic Moduli

  If average depth of an ocean is 4000 m and the bulk modulus of water is 2 × 10⁹ Nm⁻², then fractional compression ΔV/V of water at the bottom of ocean is α × 10⁻². The value of α is _____ (Given, g = 10 ms⁻², ρ = 1000 kg m⁻³)

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• MCQeasyGravitationAcceleration Due to Gravity & Escape Velocity

  The acceleration due to gravity on the surface of earth is g. If the diameter of earth reduces to half of its original value and mass remains constant, then acceleration due to gravity on the surface of earth would be :

  Options

  • Option A

    g/4

  • Option B

    2g

  • Option C

    g/2

  • Option D

    4g

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• NumericmediumGeometrical opticsApparent Depth & Lateral Shift

  Two immiscible liquids of refractive indices 8/5 and 3/2 respectively are put in a beaker as shown in the figure. The height of each column is 6 cm. A coin is placed at the bottom of the beaker. For near normal vision, the apparent depth of the coin is α/4 cm. The value of α is______.

  

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