JEE Mains 2024 08 Apr Morning Shift physics questions with solutions

Showing 1–10 of 30 questions

• MCQmediumThermodynamicsThermodynamic Cycles, Heat Engines, Efficiency and Second Law of Thermodynamics

  Two different adiabatic paths for the same gas intersect two isothermal curves as shown in P-V diagram. The relation between the ratio Vₐ/Vd and the ratio Vᵦ/Vc is:

  

  Options

  • Option A

    Vₐ/Vd = (Vᵦ/Vc)⁻¹

  • Option B

    Vₐ/Vd ≠ Vᵦ/Vc

  • Option C

    Vₐ/Vd = Vᵦ/Vc

  • Option D

    Vₐ/Vd = (Vᵦ/Vc)²

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• MCQmediumPhotoelectric effect and dual naturePhotoelectric Effect & Einstein's Equation

  Average force exerted on a non-reflecting surface at normal incidence is 2.4 × 10⁻⁴ N. If 360 W/cm² is the light energy flux during span of 1 hour 30 minutes. Then the area of the surface is:

  Options

  • Option A

    0.2 m²

  • Option B

    0.02 m²

  • Option C

    20 m²

  • Option D

    0.1 m²

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• NumericmediumWave MotionStanding Sound Waves, Organ Pipes and Resonance Tubes

  A closed and an open organ pipe have same lengths. If the ratio of frequencies of their seventh overtones is (a - 1)/a then the value of a is _____.

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• MCQeasyNewtons law of motion and FrictionNewton's Second Law & Applications

  A player caught a cricket ball of mass 150 g moving at a speed of 20 m/s. If the catching process is completed in 0.1 s, the magnitude of force exerted by the ball on the hand of the player is:

  Options

  • Option A

    150 N

  • Option B

    3 N

  • Option C

    30 N

  • Option D

    300 N

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

  Young's modulus is determined by the equation given by Y = 49000(m/ℓ) dyne/cm² where m is the mass and ℓ is the extension of wire used in the experiment. Now error in Young modules (Y) is estimated by taking data from m-ℓ plot in graph paper. The smallest scale divisions are 5 g and 0.02 cm along load axis and extension axis respectively. If the value of m and ℓ are 500 g and 2 cm respectively then percentage error of Y is :

  Options

  • Option A

    0.2 %

  • Option B

    0.02 %

  • Option C

    2 %

  • Option D

    0.5 %

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• MCQmediumsemiconductorLogic Gates & Boolean Operations

  The output Y of following circuit for given inputs is :

  

  Options

  • Option A

    A·B(A + B)

  • Option B

    A·B

  • Option C

    0

  • Option D

    A̅·B

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• NumericmediumProperties of solid and fluidSurface Tension, Surface Energy and Their Applications

  A liquid column of height 0.04 cm balances excess pressure of soap bubble of certain radius. If density of liquid is 8 × 10³ kg m⁻³ and surface tension of soap solution is 0.28 N m⁻¹, then diameter of the soap bubble is________cm. (if g = 10 m s⁻²)

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• NumericeasyCurrent electricityElectric Current, Drift Velocity & Resistance

  Resistance of a wire at 0°C, 100°C and t°C is found to be 10 Ω, 10.2 Ω and 10.95 Ω respectively. The temperature t in Kelvin scale is______.

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• MCQeasyNuclear physicsNuclear Properties, Mass Defect & Binding Energy

  Binding energy of a certain nucleus is 18 × 10⁸ J. How much is the difference between total mass of all the nucleons and nuclear mass of the given nucleus:

  Options

  • Option A

    0.2 μg

  • Option B

    20 μg

  • Option C

    2 μg

  • Option D

    10 μg

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• MCQmediumGravitationSatellites, Orbital Motion & Kepler’s Laws

  Two planets A and B having masses m₁ and m₂ move around the sun in circular orbits of r₁ and r₂ radii respectively. If angular momentum of A is L and that of B is 3L, the ratio of time period Tₐ/Tᵦ is:

  Options

  • Option A

    (r₂/r₁)³ᐟ²

  • Option B

    (r₁/r₂)³

  • Option C

    (1/27)(m₂/m₁)³

  • Option D

    27(m₁/m₂)³

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