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General Knowledge :: Physics

  1. What is the direction of torque?

  2. A.

     Perpendicular to the direction of applied force

    B.

     Same as the direction of applied force

    C.

     Opposite to the direction of applied force

    D.

     Parallel to the radius

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  3. The motion of a body around a circular path is an example of

  4. A.

     Uniform velocity, variable acceleration

    B.

     Uniform speed, uniform velocity

    C.

     Uniform speed, variable velocity

    D.

     Uniform speed, variable acceleration

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  5. What should a person on a freely rotating turn table do to decrease his (angular) speed ?

  6. A.

     Bring his hands together

    B.

     Raise his hands up

    C.

     Spread his hands outwards

    D.

     Sit down with raised hands

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  7. A sphere rolls down on two inclined planes of different angles but same height, it does so

  8. A.

     In the same time

    B.

     With the same speed

    C.

     In the same time with the same speed

    D.

     In the same time with the same kinetic energy

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  9. If a body moves with a constant speed in a circle

  10. A.

     No work is done on it

    B.

     No force acts on it

    C.

     No acceleration is produced in it

    D.

     Its velocity remains constant

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  11. A disk and a sphere of same radius but different masses roll on two inclined planes of the same altitude and length. Which one of the two objects gets to the bottom of the plane first ?

  12. A.

     Depends on their masses

    B.

     Sphere

    C.

     Disk

    D.

     Both reach at the same time

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  13. The washing machine works on the principle of

  14. A.

     Dialysis

    B.

     Diffusion

    C.

     Reverse osmosis

    D.

     Centrifugation

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  15. When an unbalanced force acts on an object

  16. A.

     Causes change in motion of the object

    B.

     The speed & direction of the object will change

    C.

     Causes the object to move

    D.

     All of the above

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  17. What type of force acts on a car moving around a curve?

  18. A.

     Centrifugal force

    B.

     Cohesive force

    C.

     Centripetal force

    D.

     Gravitational force

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  19. Damp clothes are dried in spin dryers by the action of

  20. A.

     Centripetal forces

    B.

     Centrifugal forces

    C.

     Central forces

    D.

     Non central forces

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