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General Knowledge :: Physics

  1. When all the forces and torques are balanced in a mechanical body it is said to be in

  2. A.

     Equilibrium

    B.

     Static

    C.

     Buoyancy

    D.

     None of the above


  3. Centrifugal force increases with

  4. A.

     Temperature

    B.

     Pressure

    C.

     Acceleration

    D.

     Humidity


  5. The minimum number of forces to keep a particle in equilibrium is

  6. A.

     1

    B.

     2

    C.

     3

    D.

     4


  7. When milk is churned, the cream separates from it due to:

  8. A.

     Frictional force

    B.

     Centrifugal force

    C.

     Gravitational force

    D.

     Viscous forces


  9. When the milk is churned vigorously the cream from it is separated out due to

  10. A.

     Centripetal force

    B.

     Gravitational force

    C.

     Frictional force

    D.

     Centrifugal force


  11. A man stands on the pan of a balance holding a fish in his right hand and bucket of water in his left hand. If he transfers the fish into the bucket, the total weight on the pan

  12. A.

     Increases

    B.

     Decreases

    C.

     Remains the same

    D.

     First increases and then decreases


  13. A boy is swinging a ball attached to a string in a horizontal circle. If the string snaps

  14. A.

     The ball will travel towards the center of the circle and fall down

    B.

     It will continue to travel along a tangent to the circle at the point the ball was at the time of snapping and finally fall down

    C.

     It will fall down at the same place where the string breaks

    D.

     None of these


  15. A body moving in a circular path with a constant speed has a

  16. A.

     Constant velocity

    B.

     Constant acceleration

    C.

     Constant kinetic energy

    D.

     Constant displacement


  17. The point where total mass of a body is supposed to be concentrated is known as

  18. A.

     Dead centre

    B.

     Centre of mass

    C.

     Centre of gravity

    D.

     Centre of motion


  19. The angle in which a cricket ball should be hit to travel maximum horizontal distance is :

  20. A.

     60° with horizontal

    B.

     45° with horizontal

    C.

     30° with horizontal

    D.

     15° with horizontal