AIPMT 1990 physics questions with solutions

Showing 1–7 of 7 questions

• MCQeasyUnit dimension and errorDimension and its application

  The dimensional formula of pressure is:

  Options

  • Option A

    [M L T⁻²]

  • Option B

    [M L⁻¹ T²]

  • Option C

    [M L⁻¹ T⁻²]

  • Option D

    [M L T⁻²]

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

  The maximum range of a gun on horizontal terrain is 16 km. If g = 10 m s⁻², the muzzle velocity of the shell must be:

  Options

  • Option A

    160 m s⁻¹

  • Option B

    200√2 m s⁻¹

  • Option C

    400 m s⁻¹

  • Option D

    800 m s⁻¹

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• MCQmediumGravitationSatellites, Orbital Motion & Kepler’s Laws

  A planet moves in an elliptical orbit around the Sun. If T, V, E and L denote its kinetic energy, gravitational potential energy, total energy and angular-momentum magnitude, respectively, which is correct?

  Options

  • Option A

    T is conserved.

  • Option B

    V is always positive.

  • Option C

    E is always negative.

  • Option D

    L is conserved but the direction of angular momentum changes continuously.

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

  A particle of mass m moves with initial velocity v₁. An impulse changes its velocity to v₂. The impulse is:

  Options

  • Option A

    m(|v₂|×|v₁|)

  • Option B

    ½m(v₂²-v₁²)

  • Option C

    m(v₁+v₂)

  • Option D

    m(v₂-v₁)

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• MCQmediumCircular Motioncentripital force and centrifugal force

  An electric fan has blades of length 30 cm measured from the axis of rotation. If the fan rotates at 120 rev min⁻¹, the acceleration of a point on the tip of the blade is:

  Options

  • Option A

    1600 m s⁻²

  • Option B

    47.4 m s⁻²

  • Option C

    23.7 m s⁻²

  • Option D

    50.55 m s⁻²

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

  A car covers the first half of the distance between two places at 40 km h⁻¹ and the other half at 60 km h⁻¹. The average speed of the car is:

  Options

  • Option A

    40 km h⁻¹

  • Option B

    48 km h⁻¹

  • Option C

    50 km h⁻¹

  • Option D

    60 km h⁻¹

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

  A 600 kg rocket fires vertically. The exhaust speed is 1000 m s⁻¹. Find rate of gas ejection required to balance its weight, taking g=10 m s⁻².

  Options

  • Option A

    117.6 kg s⁻¹

  • Option B

    58.6 kg s⁻¹

  • Option C

    6 kg s⁻¹

  • Option D

    76.4 kg s⁻¹

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