Re-NEET 2024 physics questions with solutions

Showing 1–10 of 12 questions

• MCQmediumGravitationAcceleration Due to Gravity & Escape Velocity

  A 100 kg object falls from point X to Y in the shown figure. X is 2Rₑ above Earth’s surface and Y is Rₑ/2 below X; take g=10 m s⁻² at the surface. What is the change in its weight, nearest integer?

  

  Options

  • Option A

    49 N

  • Option B

    89 N

  • Option C

    5 N

  • Option D

    10 N

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• MCQmediumUnit dimension and errorDimensional Analysis

  The potential energy of a particle moving along x-direction varies as V = Px²/(√x + Q). The dimensions of P²/Q are:

  Options

  • Option A

    [M³ᐟ² L¹ᐟ² T⁻³]

  • Option B

    [M¹ᐟ² L T⁻³]

  • Option C

    [M² L¹ᐟ² T⁻⁴]

  • Option D

    [M L² T⁻⁴]

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

  The two-dimensional motion of a particle is described by $\vec{r}$= A cos(ωt)($\hat{i}+2\hat{j}$). Consider: (I) parabolic path, (II) elliptical path, (III) periodic motion, (IV) simple harmonic motion. Choose the correct combination.

  Options

  • Option A

    (II), (III) and (IV) only

  • Option B

    (I), (II) and (III) only

  • Option C

    (I), (II), (III) and (IV) only

  • Option D

    (III) and (IV) only

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• MCQmediumGravitationAcceleration Due to Gravity & Escape Velocity

  Escape speed from Earth is v. A planet with nine times Earth’s mass and sixteen times its radius has escape speed:

  Options

  • Option A

    v/3

  • Option B

    2v/3

  • Option C

    3v/4

  • Option D

    9v/4

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• MCQmediumUnit dimension and errorError and its addition ,subtraction,multiplication and division

  In an electrical circuit, the voltage is measured as V = (200 ± 4) and the current is measured as I = (20 ± 0.2) A. The value of the resistance is:

  Options

  • Option A

    (10 ± 4.2) Ω

  • Option B

    (10 ± 0.3) Ω

  • Option C

    (10 ± 0.1) Ω

  • Option D

    (10 ± 0.8) Ω

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• MCQmediumCircular Motionkinematics of circular motion

  Let ω₁, ω₂ and ω₃ be the angular speeds of the second hand, minute hand and hour hand of a smoothly running analog clock. If x₁, x₂ and x₃ are their respective angular distances in 1 minute, which factor remains constant?

  Options

  • Option A

    ω₁/x₁ = ω₂/x₂ = ω₃/x₃ = k

  • Option B

    ω₁x₁ = ω₂x₂ = ω₃x₃ = k

  • Option C

    ω₁x₁² = ω₂x₂² = ω₃x₃² = k

  • Option D

    ω₁²x₁ = ω₂²x₂ = ω₃²x₃ = k

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• MCQmediumWork , Power and Energykinetic energy and work energy theorem

  An object moves horizontally with initial kinetic energy 10 J and displacement 3î m under force F = (-2î + 3ĵ) N. Its final kinetic energy is:

  Options

  • Option A

    10 J

  • Option B

    16 J

  • Option C

    4 J

  • Option D

    6 J

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

  A 5 kg box is pulled upward along a smooth 30° incline by a rope with tension 30 N. Find its acceleration, taking g=10 m s⁻².

  Options

  • Option A

    2 m s⁻²

  • Option B

    zero

  • Option C

    0.1 m s⁻²

  • Option D

    1 m s⁻²

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• MCQmediumKinematics Part-1 (one dimension)Acceleration and Avg acceleration

  A particle is moving along the x-axis with its position varying with time as x = αt⁴ + βt² + γt + δ. The ratio of its initial velocity to its initial acceleration, respectively, is:

  Options

  • Option A

    2α : δ

  • Option B

    γ : 2δ

  • Option C

    4α : β

  • Option D

    γ : 2β

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• MCQmediumRotational Motionmoment of inertia and kinetic energy in pure rotation

  A solid sphere of mass 5 kg has radius of gyration 5 m about the shown tangent axis XY. Its radius is 5x/√7 m. Find x.

  

  Options

  • Option A

    5

  • Option B

    √2

  • Option C

    √3

  • Option D

    √5

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