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PHYSICS

Top Physics MCQs

چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
In laminar flow of fluid, its adjacent layers ______?
  1. Mix with each other
  2. Slide smoothly pass each other
  3. Produce turbulence
  4. None of these
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The motion of transverse waves involves particle's vibration _____?
  1. Opposite to energy flow
  2. Perpendicular to wave propagation
  3. In random direction at every point
  4. None of these
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If 2J of work is done in moving two coulombs of charge from one point to the other in an electric field. The potential difference between the points is ______?
  1. 1 JC
  2. 1 J/C
  3. 2 J/C
  4. None of these
(0)
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During the drilling of a metal surface the drill bit heats up. This heat comes from the _____?
  1. Work done against friction
  2. Flow of electric current
  3. Compression of air
  4. None of these
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The angle formed at the center of a circle as a body moves from one position to another is ______?
  1. Angular momentum
  2. Angular displacement
  3. Angular velocity
  4. None of these
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Internal resistance reduces the terminal voltage because it ______?
  1. Causes power loss inside the battery
  2. Increases the current
  3. Decreases the emf
  4. None of these
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The electric field at a point due to a point charge is 200N/C. If suppose a -4C test charge is placed at that point then the magnitude of electric field and electric force on it is ______?
  1. 200N/C and 200N
  2. 200N/C and 800N
  3. 800N/C and 800N
  4. None of these
(0)
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The increase in kinetic energy associated with decreased pressure of a fluid in a horizontal pipe is a consequence of the _____?
  1. Torricelli's theorem
  2. Bernoulli's Principle
  3. Equation of continuity
  4. None of these
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A point lies 3m from a +5μC charge and 4m from a -3μC charge. The most appropriate direction of the net electric field at this point is directed _____?
  1. Away from the -3μC charge
  2. Away from +5μC charge
  3. Towards +5μC charge
  4. None of these
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A ball of mass m strikes a wall and rebounds with the same speed in the opposite direction, taking the initial direction as positive, the change in the momentum of the ball is _____?
  1. mv
  2. -2mv
  3. -mv
  4. None of these
(0)
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