AIPMT 1998 physics questions with solutions

Showing 1–10 of 11 questions

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

  A rubber ball is dropped from 5 m on a horizontal plane and rebounds to 1.8 m. By what fraction of its pre-impact speed is speed lost in the bounce?

  Options

  • Option A

    3/5

  • Option B

    2/5

  • Option C

    16/25

  • Option D

    9/25

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• MCQmediumWork , Power and Energyquestion based on work

  A force acts on a 3.0 g particle so that its position is x=3t-4t²+t³ (metres). Find work done during the first 4 s.

  Options

  • Option A

    570 mJ

  • Option B

    450 mJ

  • Option C

    490 mJ

  • Option D

    528 mJ

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• MCQmediumNewtons law of motion and FrictionPseudo force related problem

  Mass M is placed on a smooth wedge on frictionless ground. To keep M stationary relative to the wedge, in which direction and with what acceleration must the wedge move?

  

  Options

  • Option A

    left, a=g tanθ

  • Option B

    right, a=g tanθ

  • Option C

    left, a=g sinθ

  • Option D

    left, a=g cosθ

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

  A bullet experiences force F(t)=600-(2×10⁵)t N in a barrel. It leaves when the force becomes zero. Calculate the impulse.

  Options

  • Option A

    9 N s

  • Option B

    zero

  • Option C

    1.8 N s

  • Option D

    0.9 N s

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• MCQeasyKinematics Part-1 (one dimension)Motion under constant acceleration

  A car moving with a speed of 40 km h⁻¹ can be stopped after 2 m by applying brakes. If the same car is moving with a speed of 80 km h⁻¹, what is the minimum stopping distance?

  Options

  • Option A

    8 m

  • Option B

    2 m

  • Option C

    4 m

  • Option D

    6 m

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• MCQmediumCircular Motioncentripital force and centrifugal force

  A ball of mass 0.25 kg tied to a string of length 1.96 m moves in a horizontal circle. The string breaks if tension exceeds 25 N. What maximum possible speed can it have?

  Options

  • Option A

    14 m s⁻¹

  • Option B

    3 m s⁻¹

  • Option C

    3.92 m s⁻¹

  • Option D

    5 m s⁻¹

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• MCQmediumCenter of maas , Momentum and Collisionmomentum and conservation of momentum

  A shell explodes during flight into four unequal parts. Which quantity is conserved during the brief explosion?

  Options

  • Option A

    Potential energy

  • Option B

    Momentum

  • Option C

    Kinetic energy

  • Option D

    Both potential and kinetic energy

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

  Two equal masses moving along a straight line at velocities +3 m s⁻¹ and -5 m s⁻¹ collide elastically. What are their velocities afterwards, respectively?

  Options

  • Option A

    -4 and +4 m s⁻¹

  • Option B

    +4 m s⁻¹ for both

  • Option C

    -3 and +5 m s⁻¹

  • Option D

    -5 and +3 m s⁻¹

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

  A 5000 kg rocket is launched vertically. Exhaust speed is 800 m s⁻¹. To produce initial upward acceleration 20 m s⁻², find rate of gas ejection. Use g=10 m s⁻².

  Options

  • Option A

    185 kg s⁻¹

  • Option B

    187.5 kg s⁻¹

  • Option C

    127.5 kg s⁻¹

  • Option D

    137.5 kg s⁻¹

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• MCQmediumWork , Power and Energykinetic energy and work energy theorem

  A car at 40 km/h needs 2 m to stop using a given braking force. What stopping distance is needed at 80 km/h with the same brakes?

  Options

  • Option A

    8 m

  • Option B

    2 m

  • Option C

    4 m

  • Option D

    6 m

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