AIPMT Cancelled 2015 physics questions with solutions

Showing 1–10 of 13 questions

• MCQmediumWork , Power and Energyconservative force and potential energy

  Two springs P and Q have constants Kₚ>Kq. Compare energies/work required when (a) stretched by the same extension and (b) stretched by the same force.

  Options

  • Option A

    (a) Wₚ=Wq; (b) Wₚ>Wq

  • Option B

    (a) Wₚ=Wq; (b) Wₚ=Wq

  • Option C

    (a) Wₚ>Wq; (b) Wq>Wₚ

  • Option D

    (a) Wₚ<Wq; (b) Wq<Wₚ

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  AIPMT Cancelled 2015NEET

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

  Two particles of masses m₁,m₂ with initial speeds u₁,u₂ collide and one becomes internally excited by energy E. If final speeds are v₁,v₂, which energy relation must hold?

  Options

  • Option A

    m₁²u₁+m₂²u₂-E=m₁²v₁+m₂²v₂

  • Option B

    ½m₁²u₁²+½m₂u₂²=½m₁v₁²+½m₂²v₂²-E

  • Option C

    ½m₁u₁²+½m₂u₂²-E=½m₁v₁²+½m₂v₂²

  • Option D

    ½m₁²u₁²+½m₂²u₂²+E=½m₁²v₁²+½m₂²v₂²

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• MCQmediumGravitationSatellites, Orbital Motion & Kepler’s Laws

  Kepler’s third law is written T²=Kr³ for a planet of mass m orbiting a Sun of mass M. Newton’s gravitational force is F=GMm/r². What relation connects K and G?

  Options

  • Option A

    GK=4π²

  • Option B

    GMK=4π²

  • Option C

    K=G

  • Option D

    K=1/G

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

  A ship A is moving westwards with a speed of 10 km h⁻¹ and a ship B, initially 100 km south of A, is moving northwards with a speed of 10 km h⁻¹. The time after which the distance between them becomes shortest is:

  Options

  • Option A

    0 h

  • Option B

    5 h

  • Option C

    5√2 h

  • Option D

    10√2 h

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• MCQmediumWork , Power and EnergyPower

  A machine supplies constant power k to a mass m initially at rest. What force acts on the mass at time t?

  Options

  • Option A

    √(mk/2) t⁻¹ᐟ²

  • Option B

    √(mk) t⁻¹ᐟ²

  • Option C

    √(2mk) t⁻¹ᐟ²

  • Option D

    ½√(mk) t⁻¹ᐟ²

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• MCQmediumWork , Power and Energykinetic energy and work energy theorem

  A 10 kg block initially travelling at 10 m s⁻¹ is subjected to a retarding force of magnitude 0.1x N while travelling from x=20 m to x=30 m. Find its final kinetic energy.

  Options

  • Option A

    475 J

  • Option B

    450 J

  • Option C

    275 J

  • Option D

    250 J

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• MCQmediumNewtons law of motion and Frictionsimple pulley problem

  Block A of mass m₁ slides on a horizontal rough table (kinetic friction μₖ), connected via light string/pulley to hanging block B of mass m₂. Find tension T while A slides toward the pulley.

  Options

  • Option A

    m₁(m₂+μₖm₁)g/(m₁+m₂)

  • Option B

    (m₂-μₖm₁)g/(m₁+m₂)

  • Option C

    m₁m₂(1+μₖ)g/(m₁+m₂)

  • Option D

    m₁m₂(1-μₖ)g/(m₁+m₂)

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

  Three touching blocks A, B and C have masses 4 kg, 2 kg and 1 kg on a frictionless floor. A horizontal force 14 N pushes block A. Find contact force between A and B.

  

  Options

  • Option A

    2 N

  • Option B

    6 N

  • Option C

    8 N

  • Option D

    18 N

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• MCQmediumUnit dimension and errorDimension and its application

  If energy E, velocity v and time T are chosen as fundamental quantities, the dimensional formula of surface tension will be:

  Options

  • Option A

    [E v⁻² T⁻¹]

  • Option B

    [E v⁻¹ T⁻²]

  • Option C

    [E v⁻² T⁻²]

  • Option D

    [E⁻² v⁻¹ T⁻³]

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• MCQmediumRotational Motiontorque and rotational equilibrium

  A rod of weight W rests horizontally on knife-edge supports A and B separated by d. Its centre of mass is distance x from A. The normal reaction at A is:

  Options

  • Option A

    Wx/d

  • Option B

    Wd/x

  • Option C

    W(d-x)/x

  • Option D

    W(d-x)/d

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