JEE Mains 2024 01 Feb Morning Shift physics questions with solutions

Showing 1–10 of 28 questions

• MCQmediumWave OpticsDiffraction of Light

  A monochromatic light of wavelength 6000 Å is incident on a single slit of width 0.01 mm. If the diffraction pattern is formed at the focus of a convex lens of focal length 20 cm, the linear width of the central maximum is:

  Options

  • Option A

    60 mm

  • Option B

    24 mm

  • Option C

    120 mm

  • Option D

    12 mm

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• NumericmediumGeometrical opticsLenses, Lens Combinations & Silvered Lenses

  The distance between an object and its 3 times magnified virtual image produced by a convex lens is 20 cm. The focal length of the lens used is ______ cm.

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• NumericeasyCurrent electricityElectric Current, Drift Velocity & Resistance

  The current in a conductor is expressed as I = 3t² + 4t³, where I is in ampere and t is in second. The amount of electric charge that flows through a section of the conductor during t = 1 s to t = 2 s is ______ C.

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• NumericmediumWave MotionBeats, Loudness, Pitch and Characteristics of Sound

  A tuning fork resonates with a sonometer wire of length 1 m stretched with tension 6 N. When the tension is changed to 54 N, the same tuning fork produces 12 beats per second with it. The frequency of the tuning fork is ______ Hz.

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• MCQeasyElectromagnetic waveDisplacement Current, Maxwell's Equations and Properties of Electromagnetic Waves

  A parallel plate capacitor has capacitance C = 200 pF. It is connected to a 230 V AC supply with angular frequency 300 rad s⁻¹. The rms values of conduction current in the circuit and displacement current in the capacitor respectively are:

  Options

  • Option A

    1.38 μA and 1.38 μA

  • Option B

    14.3 μA and 143 μA

  • Option C

    13.8 μA and 138 μA

  • Option D

    13.8 μA and 13.8 μA

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• MCQmediumKinematics part-2 Projectile MotionMotion in 2-D and ground to ground projectile

  A particle moving in a circle of radius R with uniform speed takes time T to complete one revolution. If this particle is projected with the same speed at an angle θ to the horizontal, the maximum height attained is 4R. The angle of projection θ is then given by:

  Options

  • Option A

    sin⁻¹√(2gT²/(π²R))

  • Option B

    sin⁻¹√(π²R/(2gT²))

  • Option C

    cos⁻¹√(2gT²/(π²R))

  • Option D

    cos⁻¹√(πR/(2gT²))

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• MCQeasyAC CircuitsSeries AC Circuits: Impedance, Phase Difference, Resonance and Power Factor

  In a series LCR circuit, the capacitance is changed from C to 4C. To keep the resonance frequency unchanged, the new inductance should be:

  Options

  • Option A

    reduced by L/4

  • Option B

    increased by 2L

  • Option C

    reduced by 3L/4

  • Option D

    increased to 4L

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• MCQeasyUnits, Dimensions, Measurements and ErrorsDimensional Analysis and Its Applications

  The dimensional formula of angular impulse is:

  Options

  • Option A

    [ML⁻²T⁻¹]

  • Option B

    [ML²T⁻²]

  • Option C

    [MLT⁻¹]

  • Option D

    [ML²T⁻¹]

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• MCQmediumGravitationAcceleration Due to Gravity & Escape Velocity

  If R is the radius of the earth and the acceleration due to gravity on the surface of earth is g = π² m s⁻², then the length of the seconds pendulum at a height h = 2R from the surface of earth will be:

  Options

  • Option A

    2/9 m

  • Option B

    1/9 m

  • Option C

    4/9 m

  • Option D

    8/9 m

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

  The reading in the ideal voltmeter V shown in the given circuit diagram is:

  

  Options

  • Option A

    5 V

  • Option B

    10 V

  • Option C

    0 V

  • Option D

    3 V

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