JEE Mains 2024 08 Apr Evening Shift physics questions with solutions

Showing 1–10 of 30 questions

• NumericmediumElectrostaticElectric Field & Superposition Principle

  If the net electric field at point P along Y axis is zero, then the ratio of |q₂/q₃| is 8/(5√x), where x = ______.

  

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

  Small water droplets of radius 0.01 mm are formed in the upper atmosphere and falling with a terminal velocity of 10 cm/s. Due to condensation, if 8 such droplets are coalesced and formed a larger drop, the new terminal velocity will be ______ cm/s.

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• MCQmediumFluid MechanicsPascal's Law, Buoyant Force and Archimedes' Principle

  A cube of ice floats partly in water and partly in kerosene oil. The ratio of volume of ice immersed in water to that in kerosene oil is: (specific gravity of kerosene oil = 0.8, specific gravity of ice = 0.9)

  

  Options

  • Option A

    8 : 9

  • Option B

    5 : 4

  • Option C

    9 : 10

  • Option D

    1 : 1

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• MCQeasyNuclear physicsNuclear Properties, Mass Defect & Binding Energy

  If M₀ is the mass of isotope ¹²₅B, Mₚ and Mₙ are the masses of proton and neutron, then nuclear binding energy of isotope is:

  Options

  • Option A

    (5Mₚ + 7Mₙ - M₀)c²

  • Option B

    (M₀ - 5Mₚ)c²

  • Option C

    (M₀ - 12Mₙ)c²

  • Option D

    (M₀ - 5Mₚ - 7Mₙ)c²

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• MCQeasyWave MotionWave Motion and General Equation of Travelling Waves

  A plane progressive wave is given by y = 2 cos 2π(330t - x) m. The frequency of the wave is:

  Options

  • Option A

    165 Hz

  • Option B

    330 Hz

  • Option C

    660 Hz

  • Option D

    340 Hz

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• NumericmediumWave OpticsYoung's Double-Slit Experiment (YDSE)

  Two slits are 1 mm apart and the screen is located 1 m away from the slits. A light wavelength 500 nm is used. The width of each slit to obtain 10 maxima of the double slit pattern within the central maximum of the single slit pattern is ______ × 10⁻⁴ m.

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• MCQeasyThermodynamicsKinetic Theory of Gases and Molecular Properties

  Given below are two statements:

  Statement I: The mean free path of gas molecules is inversely proportional to square of molecular diameter.

  Statement II: Average kinetic energy of gas molecules is directly proportional to absolute temperature of gas.

  In the light of the above statements, choose the correct answer from the option given below:

  Options

  • Option A

    Statement I is false but Statement II is true.

  • Option B

    Statement I is true but Statement II is false.

  • Option C

    Both Statement I and Statement II are false.

  • Option D

    Both Statement I and Statement II are true.

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• MCQmediumNewtons law of motion and FrictionFriction in Single-Block Systems

  A given object takes n times the time to slide down 45° rough inclined plane as it takes the time to slide down an identical perfectly smooth 45° inclined plane. The coefficient of kinetic friction between the object and the surface of inclined plane is:

  Options

  • Option A

    1 - 1/n²

  • Option B

    1 - n²

  • Option C

    1/n² - 1

  • Option D

    1 - 1/n

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• MCQmediumWork , Power and EnergyKinetic Energy & Work-Energy Theorem

  A block is simply released from the top of an inclined plane as shown in the figure above. The maximum compression in the spring when the block hits the spring is:

  

  Options

  • Option A

    √6 m

  • Option B

    2 m

  • Option C

    1 m

  • Option D

    √5 m

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• NumericeasyMagnetism and matterMagnetic Properties of Materials: Diamagnetism, Paramagnetism and Ferromagnetism

  The coercivity of a magnet is 5 × 10³ A/m. The amount of current required to be passed in a solenoid of length 30 cm and the number of turns 150, so that the magnet gets demagnetised when inside the solenoid is ______ A.

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