JEE Mains 2024 01 Feb Evening Shift physics questions with solutions

Showing 1–10 of 30 questions

• NumericmediumCapacitorRC circuit

  In an electrical circuit drawn below the amount of charge stored in the capacitor is ____ μC.

  

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• MCQmediumRotational Motionrolling on inclined surface

  A disc of radius R and mass M is rolling horizontally without slipping with speed v. It then moves up an inclined smooth surface as shown in figure. The maximum height that the disc can go up the incline is:

  

  Options

  • Option A

    v²/g

  • Option B

    3v²/(4g)

  • Option C

    v²/(2g)

  • Option D

    2v²/(3g)

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• MCQeasyThermodyanmicsfirst law of thermodynamics

  A diatomic gas (γ = 1.4) does 200 J of work when it is expanded isobarically. The heat given to the gas in the process is:

  Options

  • Option A

    850 J

  • Option B

    800 J

  • Option C

    600 J

  • Option D

    700 J

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• MCQmediumWave Opticsdiffraction of light

  A microwave of wavelength 2.0 cm falls normally on a slit of width 4.0 cm. The angular spread of the central maxima of the diffraction pattern obtained on a screen 1.5 m away from the slit, will be:

  Options

  • Option A

    30°

  • Option B

    15°

  • Option C

    60°

  • Option D

    45°

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• MCQmediumCapacitorRC circuit

  A galvanometer G of 2 Ω resistance is connected in the given circuit. The ratio of charge stored in C₁ and C₂ is:

  

  Options

  • Option A

    2/3

  • Option B

    3/2

  • Option C

    1

  • Option D

    1/2

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

  A cricket player catches a ball of mass 120 g moving with 25 m/s speed. If the catching process is completed in 0.1 s then the magnitude of force exerted by the ball on the hand of player will be (in SI unit):

  Options

  • Option A

    24

  • Option B

    12

  • Option C

    25

  • Option D

    30

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• MCQmediumCurrent electricityequivalent resistance

  To measure the temperature coefficient of resistivity α of a semiconductor, an electrical arrangement shown in the figure is prepared. The arm BC is made up of the semiconductor. The experiment is being conducted at 25°C and resistance of the semiconductor arm is 3 mΩ. Arm BC is cooled at a constant rate of 2°C/s. If the galvanometer G shows no deflection after 10s, then α is:

  

  Options

  • Option A

    -2 × 10⁻² °C⁻¹

  • Option B

    -1.5 × 10⁻² °C⁻¹

  • Option C

    -1 × 10⁻² °C⁻¹

  • Option D

    -2.5 × 10⁻² °C⁻¹

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• MCQeasyUnit dimension and errorsignificant number

  Match List-I with List-II.match the correct signigicant number

  List-I
  A. 1001
  B. 010.1
  C. 100.100
  D. 0.0010010

  List-II I. 3 II. 4 III. 5 IV. 6

  Choose the correct answer from the options given below:

  Options

  • Option A

    A-III, B-IV, C-II, D-I

  • Option B

    A-IV, B-III, C-I, D-II

  • Option C

    A-II, B-I, C-IV, D-III

  • Option D

    A-I, B-II, C-III, D-IV

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• NumericmediumProperties of solid and fluidpropertes of solid stress ,strain and modulus of elasticity

  One end of a metal wire is fixed to a ceiling and a load of 2 kg hangs from the other end. A similar wire is attached to the bottom of the load and another load of 1 kg hangs from this lower wire. Then the ratio of longitudinal strain of upper wire to that of the lower wire will be ____. [Area of cross section of wire = 0.005 cm², Y = 2 × 10¹¹ N m⁻² and g = 10 m s⁻²]

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• NumericmediumElectromagnetic Inductionfaradays law and question based on it

  A coil of 200 turns and area 0.20 m² is rotated at half a revolution per second and is placed in uniform magnetic field of 0.01 T perpendicular to axis of rotation of the coil. The maximum voltage generated in the coil is (2π/β) volt. The value of β is ____.

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