Quiz  /  Uniform Circular Motion MCQ

  • 1. 
    The angular velocity of a body moving with a constant speed v in a circle of radius r is given by

  • v
  • /r
  • vr
  • v/r
  • r/v

  • 2. 
    A cyclist turns around a curve at 15 miles/hour. If he turns at double the speed, the tendency to overturn is

  • Doubled
  • Quadrupled
  • Halved
  • Unchanged

  • 3. 
    What will be the velocity vector of a particle moving in a circle describing equal angles in equal times

  • Changes in direction
  • Remains constant
  • Changes in magnitude
  • Changes both in direction and magnitude

  • 4. 
    A body moves with a constant speed in a circular path is moving in a circular path with a constant speed. It has

  • Acceleration of constant magnitude
  • Constant velocity
  • Constant acceleration
  • An acceleration which varies with time

  • 5. 
    A motorcyclist going with a constant speed in a circular track has

  • Linear velocity is constant
  • Constant acceleration
  • Angular velocity is constant
  • Constant force

  • 6. 
    What could be the reason a car moving on a horizontal road gets thrown out of the road while taking a turn

  • Due to the reaction of the ground
  • Due to rolling frictional force between tyre and road
  • By the gravitational force
  • Due to lack of sufficient centripetal force

  • 7. 
    If a particle moves with constant angular velocity in a circle then during the motion its

  • Momentum is conserved
  • Energy is conserved
  • Both energy and momentum is conserved
  • None of the above is conserved

  • 8. 
    A stone tied to a string is rotated in a circle. If the string is cut, the stone flies away from the circle because

  • A centrifugal force acts on the stone
  • Of its inertia
  • A centripetal force acts on the stone
  • The reaction of the centripetal force

  • 9. 
    A body moves with a constant speed along a circle. Then,

  • No work is done on it
  • There is no acceleration produced in the body
  • No force acts on the body
  • The body has constant velocity

  • 10. 
    A tachometer is a device to measure

  • Gravitational pull
  • Speed of rotation
  • Surface tension
  • Tension in a spring
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