JEE Mains 2024 05 Apr Morning Shift physics questions with solutions

Showing 1–10 of 30 questions

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

  In the experiment to determine the galvanometer resistance by half-deflection method, the plot of 1/θ vs the resistance (R) of the resistance box is shown in the figure. The figure of merit of the galvanometer is ______ × 10⁻¹ A/division. [The source has emf 2V]

  

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• MCQeasyMagnetic effect of currentampere's law and its application

  In a co-axial straight cable, the central conductor and the outer conductor carry equal currents in opposite directions. The magnetic field is zero:

  Options

  • Option A

    inside the outer conductor

  • Option B

    in between the two conductors

  • Option C

    outside the cable

  • Option D

    inside the inner conductor

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• MCQmediumElectrostaticelectric charge and coulamb's law

  In hydrogen like system the ratio of coulombian force and gravitational force between an electron and a proton is in the order of:

  Options

  • Option A

    10³⁹

  • Option B

    10¹⁹

  • Option C

    10²⁹

  • Option D

    10³⁶

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• NumericmediumMagnetic effect of currentMagnetic Force on Current carrying conductor

  A 2A current carrying straight metal wire of resistance 1 Ω, resistivity 2 × 10⁻⁶ Ωm, area of cross-section 10 mm² and mass 500 g is suspended horizontally in mid air by applying a uniform magnetic field B. The magnitude of B is ______ × 10⁻¹ T (given, g = 10 m/s²)

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• MCQeasyNewtons law of motion and Frictionnewton second law and problem based on it

  A wooden block of mass 5kg rests on soft horizontal floor. When an iron cylinder of mass 25 kg is placed on the top of the block, the floor yields and the block and the cylinder together go down with an acceleration of 0.1 m s⁻². The action force of the system on the floor is equal to:

  Options

  • Option A

    297 N

  • Option B

    294 N

  • Option C

    291 N

  • Option D

    196 N

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• MCQmediumThermodynamicskinetic therory of gaseous

  If the collision frequency of hydrogen molecules in a closed chamber at 27°C is Z, then the collision frequency of the same system at 127°C is:

  Options

  • Option A

    (√3/2)Z

  • Option B

    (4/3)Z

  • Option C

    (2/√3)Z

  • Option D

    ($\frac{3}{4}$)Z

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

  An electron rotates in a circle around a nucleus having positive charge Ze. Correct relation between total energy (E) of electron to its potential energy (U) is:

  Options

  • Option A

    E = 2U

  • Option B

    2E = 3U

  • Option C

    E = U

  • Option D

    2E = U

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• MCQmediumGravitationAcceleration Due to Gravity & Escape Velocity

  A simple pendulum doing small oscillations at a place R height above earth surface has time period of T₁ = 4 s. T₂ would be it's time period if it is brought to a point which is at a height 2R from earth surface. Choose the correct relation [R = radius of Earth]:

  Options

  • Option A

    T₁ = T₂

  • Option B

    2T₁ = 3T₂

  • Option C

    3T₁ = 2T₂

  • Option D

    2T₁ = T₂

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• MCQeasyMathematical tools and vectorVectors

  The angle between vector Q and the resultant of (2Q + 2P) and (2Q - 2P) is:

  Options

  • Option A

    0°

  • Option B

    tan⁻¹[(2Q - 2P)/(2Q + 2P)]

  • Option C

    tan⁻¹(P/Q)

  • Option D

    tan⁻¹(2Q/P)

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• MCQeasyWork , Power and Energyquestion based on work

  A body of mass 50 kg is lifted to a height of 20 m from the ground in the two different ways as shown in the figures. The ratio of work done against the gravity in both the respective cases, will be:

  

  Options

  • Option A

    1 : 1

  • Option B

    2 : 1

  • Option C

    √3 : 2

  • Option D

    1 : 2

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