JEE Mains 2024 physics questions with solutions

Showing 1–10 of 30 questions

• 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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• MCQeasyCurrent electricityEquivalent Resistance & Networks

  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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• MCQeasyThermodynamicsthermodynmic process and work done

  0.08 kg air is heated at constant volume through 5°C. The specific heat of air at constant volume is 0.17 kcal/kg°C and J = 4.18 joule/cal. The change in its internal energy is approximately.

  Options

  • Option A

    318 J

  • Option B

    298 J

  • Option C

    284 J

  • Option D

    142 J

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• 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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• 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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• MCQeasyUnit dimension and errorvernier callipers and screw gauge

  Identify the physical quantity that cannot be measured using spherometer :

  Options

  • Option A

    Radius of curvature of concave surface

  • Option B

    Specific rotation of liquids

  • Option C

    Thickness of thin plates

  • Option D

    Radius of curvature of convex surface

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• NumericeasyNuclear physicsnuclear fission and fusion ,nuclear reactor

  In a nuclear fission process, a high mass nuclide (A ≈ 236) with binding energy 7.6 MeV/Nucleon dissociated into middle mass nuclides (A ≈ 118), having binding energy of 8.6 MeV/Nucleon. The energy released in the process would be ____ MeV.

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

  The radius of third stationary orbit of electron for Bohr's atom is R. The radius of fourth stationary orbit will be:

  Options

  • Option A

    4R/3

  • Option B

    16R/9

  • Option C

    3R/4

  • Option D

    9R/16

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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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