JEE Mains 2024 physics questions with solutions

Showing 1–10 of 30 questions

• MCQeasyUnit dimension and errorDimension and its application

  Given below are two statements : Statement (I) : Planck's constant and angular momentum have same dimensions. Statement (II) : Linear momentum and moment of force have same dimensions. In the light of the above statements, choose the correct answer from the options given below :

  Options

  • Option A

    Statement I is true but Statement II is false

  • Option B

    Both Statement I and Statement II are false

  • Option C

    Both Statement I and Statement II are true

  • Option D

    Statement I is false but Statement II is true

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• NumericmediumCapacitorRC circuit

  The charge accumulated on the capacitor connected in the following circuit is ____ μC (Given C = 150 μF)

  

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• MCQeasyCurrent electricityequivalent resistance

  A wire of resistance R and length L is cut into 5 equal parts. If these parts are joined parallely, then resultant resistance will be :

  Options

  • Option A

    R/25

  • Option B

    R/5

  • Option C

    25R

  • Option D

    5R

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• MCQeasyKinematics part-2 Projectile MotionGround 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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• MCQmediumPhotoelectric effect and dual nature of matterquestion based on photoelectric effect

  A convex lens of focal length 40 cm forms an image of an extended source of light on a photo-electric cell. A current I is produced. The lens is replaced by another convex lens having the same diameter but focal length 20 cm. The photoelectric current now is :

  Options

  • Option A

    I/2

  • Option B

    4I

  • Option C

    2I

  • Option D

    I

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• MCQeasyProperties of solid and fluidviscosity 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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• NumericmediumSimple Harmonic Motiondisplacement ,velocity and acceleration ,phasor diagram

  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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• MCQmediumThermodyanmicskinetic therory of gaseous

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

  Two long, straight wires carry equal currents in opposite directions as shown in figure. The separation between the wires is 5.0 cm. The magnitude of the magnetic field at a point P midway between the wires is ____ μT (Given : μ₀ = 4π × 10⁻⁷ TmA⁻¹)

  

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• MCQmediumGeometrical opticsprism and thin prism

  If the refractive index of the material of a prism is cot(A/2), where A is the angle of prism then the angle of minimum deviation will be

  Options

  • Option A

    π - 2A

  • Option B

    π/2 - 2A

  • Option C

    π - A

  • Option D

    π/2 - A

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