JEE Mains 2024 31 Jan Morning Shift physics questions with solutions

Showing 1–10 of 30 questions

• NumericmediumCenter of maas , Momentum and Collisioncollision and types of collision

  A body starts falling freely from height H and hits an inclined plane in its path at height h. As a result of this perfectly elastic impact, the direction of velocity becomes horizontal. The value of H/h for which the body will take the maximum time to reach the ground is ____. Image

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• MCQmediumMagnetic effect of currentmagnetic force between current carring wire

  A rigid wire consists of a semicircular portion of radius R and two straight sections. The wire is partially immersed in a perpendicular magnetic field $\vec{B}$= B₀ĵ as shown in the figure. The magnetic force on the wire if it has a current i is:

  

  Options

  • Option A

    -iBR ĵ

  • Option B

    2iBR ĵ

  • Option C

    iBR ĵ

  • Option D

    -2iBR ĵ

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• MCQmediumProperties of solid and fluidviscosity and terminal velocity

  A small steel ball is dropped into a long cylinder containing glycerine. Which one of the following is the correct representation of the velocity-time graph for the transit of the ball?

  Options

  • Option A

    
  • Option B

    
  • Option C

    
  • Option D

    

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

  If the wavelength of the first member of Lyman series of hydrogen is λ, the wavelength of the second member will be

  Options

  • Option A

    (27/32)λ

  • Option B

    (32/27)λ

  • Option C

    (27/5)λ

  • Option D

    (5/27)λ

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• MCQeasyWave Motionstationary wave in sound and organ pipe ,resonance tube

  The fundamental frequency of a closed organ pipe is equal to the first overtone frequency of an open organ pipe. If length of the open pipe is 60 cm, the length of the closed pipe will be:

  Options

  • Option A

    60 cm

  • Option B

    45 cm

  • Option C

    30 cm

  • Option D

    15 cm

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• MCQeasyThermodyanmicskinetic therory of gaseous

  The parameter that remains the same for molecules of all gases at a given temperature is :

  Options

  • Option A

    kinetic energy

  • Option B

    momentum

  • Option C

    mass

  • Option D

    speed

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• NumericmediumCapacitorcapacitor with dielectric

  A parallel plate capacitor with plate separation 5 mm is charged by a battery. On introducing a dielectric sheet of thickness 2 mm, while keeping the battery connected, the capacitor draws 25% more charge from the battery than before. The dielectric constant of the sheet is ____.

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• MCQmediumGeometrical opticsprism and thin prism

  The refractive index of a prism with apex angle A is cot(A/2). The angle of minimum deviation is:

  Options

  • Option A

    δₘ = 180° - A

  • Option B

    δₘ = 180° - 3A

  • Option C

    δₘ = 180° - 4A

  • Option D

    δₘ = 180° - 2A

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• MCQmediumElectromagnetic Inductionfaradays law and question based on it

  A coil is placed perpendicular to a magnetic field of 5000 T. When the field is changed to 3000 T in 2 s, an induced emf of 22 V is produced in the coil. If the diameter of the coil is 0.02 m, then the number of turns in the coil is:

  Options

  • Option A

    7

  • Option B

    70

  • Option C

    35

  • Option D

    140

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• NumericmediumCurrent electricityequivalent resistance

  Equivalent resistance of the following network is _____ Ω.

  

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