JEE Mains 2024 01 Feb Morning Shift physics questions with solutions

Showing 1–10 of 28 questions

• MCQeasyThermodyanmicsthermodynmic process and work done

  Two moles of a monoatomic gas are mixed with six moles of a diatomic gas. The molar specific heat of the mixture at constant volume is:

  Options

  • Option A

    9R/4

  • Option B

    7R/4

  • Option C

    3R/2

  • Option D

    5R/2

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• NumericmediumGeometrical opticslens and combination lens,silvered lens

  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.

  Your answer

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• MCQeasyAtomic Structure and X-raysatomic structre and bohr atomic model

  The minimum energy required by a hydrogen atom in ground state to emit radiation in the Balmer series is nearly:

  Options

  • Option A

    1.5 eV

  • Option B

    13.6 eV

  • Option C

    1.9 eV

  • Option D

    12.1 eV

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• MCQmediumWork , Power and Energyvertical circular motion

  A simple pendulum of length 1 m has a wooden bob of mass 1 kg. It is struck by a bullet of mass 10⁻² kg moving with a speed of 2 × 10² m s⁻¹. The bullet gets embedded into the bob. The height to which the bob rises before swinging back is: [Use g = 10 m s⁻²]

  Options

  • Option A

    0.30 m

  • Option B

    0.20 m

  • Option C

    0.35 m

  • Option D

    0.40 m

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• MCQmediumCurrent electricityelectric instruments

  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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• MCQeasyCircular Motioncentripital force and centrifugal force

  A ball of mass 0.5 kg is attached to a string of length 50 cm. The ball is rotated on a horizontal circular path about its vertical axis. The maximum tension that the string can bear is 400 N. The maximum possible angular velocity of the ball in rad s⁻¹ is:

  Options

  • Option A

    1600

  • Option B

    40

  • Option C

    1000

  • Option D

    20

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• NumericeasyCenter of maas , Momentum and Collisioncenter of mass and question based on it

  Identical spheres, each of mass 2M, are placed at the corners of a right-angled triangle whose mutually perpendicular sides are 4 m each. Taking the point of intersection of these two sides as origin, the magnitude of the position vector of the centre of mass is 4√2/x, where x is ____.

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• MCQmediumCapacitorconnecting of capacitor with battery,connenctiong of two capacitor

  Two identical capacitors have the same capacitance C. One is charged to potential V and the other to potential 2V. Their negative ends are connected together. When the positive ends are also joined together, the decrease in energy of the combined system is:

  Options

  • Option A

    CV²/4

  • Option B

    2CV²

  • Option C

    CV²/2

  • Option D

    3CV²/4

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• MCQmediumKinematics part-2 Projectile MotionGround 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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• MCQeasyCurrent electricityelectric instruments

  A galvanometer has a resistance of 50 Ω and allows a maximum current of 5 mA. It can be converted into a voltmeter to measure up to 100 V by connecting in series a resistor of resistance:

  Options

  • Option A

    5975 Ω

  • Option B

    20050 Ω

  • Option C

    19950 Ω

  • Option D

    19500 Ω

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