NEET 2019 physics questions with solutions

Showing 1–10 of 20 questions

• MCQmediumWork , Power and Energyquestion based on work

  A 500 g particle starts from rest under the force-versus-position graph shown. Find its speeds at x=8 m and x=12 m (nearly).

  

  Options

  • Option A

    18 m/s and 24.4 m/s

  • Option B

    23 m/s and 24.4 m/s

  • Option C

    23 m/s and 20.6 m/s

  • Option D

    18 m/s and 20.6 m/s

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• MCQmediumKinematics Part-1 (one dimension)Distance,Displacement ,Avg speed and Avg velocity

  The speed of a swimmer in still water is 20 m s⁻¹. The speed of river water is 10 m s⁻¹ and is flowing to east. If he is standing on the south bank and wishes to cross the river along the shortest path, the angle at which he should make his strokes with respect to north is given by:

  Options

  • Option A

    0°

  • Option B

    60° west

  • Option C

    45° west

  • Option D

    30° west

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• MCQmediumRotational Motionrolling on inclined surface

  A solid cylinder of mass 2 kg and radius 50 cm rolls up a 30° incline without slipping with initial centre speed 4 m/s. How far does it travel up the slope? (g=10 m/s²)

  Options

  • Option A

    2.2 m

  • Option B

    1.6 m

  • Option C

    1.2 m

  • Option D

    2.4 m

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

  In an experiment, percentage errors in physical quantities A, B, C and D are 1%, 2%, 3% and 4% respectively. If X = A²B¹ᐟ²/(C¹ᐟ³D³), the maximum percentage error in X is:

  Options

  • Option A

    16%

  • Option B

    -10%

  • Option C

    10%

  • Option D

    (3/13)%

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• MCQmediumRotational Motionquestion based on pure rotation about fixed axis

  A solid cylinder of mass 2 kg and radius 4 cm spins about its axis at 3 rpm. Find the torque needed to bring it to rest after 2π revolutions.

  Options

  • Option A

    2×10⁻³ N·m

  • Option B

    2×10⁻⁴ N·m

  • Option C

    2×10⁻⁵ N·m

  • Option D

    2×10⁻⁶ N·m

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

  A 4m mass travelling at speed u elastically collides head-on with a stationary 2m mass. What fraction of the first body's initial kinetic energy is lost?

  Options

  • Option A

    8/9

  • Option B

    4/9

  • Option C

    5/9

  • Option D

    1/9

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

  An object flying in air with velocity (20î+ 25$\hat{j}$- 12$\hat{k}$) m s⁻¹ suddenly breaks into two pieces whose masses are in the ratio 1 : 5. The smaller piece moves with velocity (100$\hat{i}$+ 35$\hat{j}$+ 8$\hat{k}$) m s⁻¹. Find the velocity of the larger piece.

  Options

  • Option A

    4$\hat{i}$ + 23$\hat{j}-16\hat{k}$

  • Option B

    -100$\hat{i}-35\hat{j}-8\hat{k}$

  • Option C

    20$\hat{i}+15\hat{j}-80\hat{k}$

  • Option D

    -20$\hat{i}-15\hat{j}-80\hat{k}$

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• MCQmediumGravitationGravitation, Gravitational Field & Potential Energy

  What work is required to raise a mass m from Earth’s surface to height h=R, where R is Earth’s radius?

  Options

  • Option A

    3mgR/2

  • Option B

    mgR

  • Option C

    2mgR

  • Option D

    mgR/2

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• MCQmediumGravitationGravitation, Gravitational Field & Potential Energy

  Assume gravitational potential energy is zero at infinity. What is the change in potential energy (final minus initial) of mass m raised through height h above Earth’s surface of radius R?

  Options

  • Option A

    GMm/(R+h)

  • Option B

    GMmh/[R(R+h)]

  • Option C

    mgh

  • Option D

    GMm/R

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• MCQmediumKinematics part-2 Projectile MotionInclined projectile

  An object is shot from the bottom of a long smooth inclined plane with speed u. When the plane is at 60° to the horizontal it travels a distance x₁ before stopping. When the plane is at 30° and the same object is shot with the same speed, it travels x₂. Then x₁: x₂ is:

  Options

  • Option A

    √2 : 1

  • Option B

    1 : √3

  • Option C

    1 : 2√3

  • Option D

    1 : √2

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