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General Knowledge :: Physics

  1. Ball pen functions on the principle of :

  2. A.

     Viscosity

    B.

     Boyle's Law

    C.

     Gravitational force

    D.

     Surface tension


  3. When a detergent is added to pure water, its surface tension

  4. A.

     Increases

    B.

     Decreases

    C.

     Remains constant

    D.

     Becomes infinite


  5. Pieces of camphor placed on water move about rapidly. This is because of

  6. A.

     Diffusion

    B.

     Viscosity

    C.

     Surface tension

    D.

     Capillarity


  7. What is unit of Viscosity ?

  8. A.

     Coulomb

    B.

     Newton second per square meter

    C.

     Watt per meter per degree celcius

    D.

     Joule per kilogram per Kelvin


  9. The hair of shaving brush clings together when removed from water due to

  10. A.

     Surface tension

    B.

     Viscosity

    C.

     Elasticity

    D.

     Friction


  11. A body falling through a liquid acquires a steady velocity is known as

  12. A.

     End velocity

    B.

     Touch down velocity

    C.

     Terminal velocity

    D.

     Steady state velocity


  13. The spoon dropped by an astronaut in a satellite will

  14. A.

     Fall to the floor

    B.

     Remain stationary

    C.

     Continue to follow the motion of the satellite

    D.

     Move tangentially away


  15. An aircraft can perform aerobatic manoeuvres in a vertical loop because of

  16. A.

     Gravity

    B.

     Centripetal force

    C.

     Weight

    D.

     Centrifugal force


  17. Which one is not a part of Kepler's Law?

  18. A.

     Law of orbits

    B.

     Law of areas

    C.

     Law of speed

    D.

     Law of periods


  19. Kepler's law of planetary motion states that the square of the time period is proportional to the

  20. A.

     Semi-major axis

    B.

     Square of the semi-major axis

    C.

     Cube of the semi-major axis

    D.

     Fourth power of the semi-major axis