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General Knowledge :: Physics

  1. The wall of a dam is broader at the base

  2. A.

     Because streamlining is required

    B.

     To withstand pressure that increases with depth

    C.

     To withstand pressure that increases in a horizontal plane

    D.

     To withstand pressure that is increased with atmospheric pressure


  3. It is easy to burst a gas-filled balloon with a needle than with a nail. It is because

  4. A.

     Nail is more longer than needle.

    B.

     Nail exerts more pressure than needle on the balloon.

    C.

     Needle exerts more pressure than nail on the balloon.

    D.

     Gas is reactive with the needle.


  5. The force exerted on an object is 200 N and its mass is 100 kg. Find the acceleration of the object.

  6. A.

     2 m/s

    B.

     2 m

    C.

     2 m/sq.s

    D.

     2 s


  7. The spokes used in the wheel of a bicycle increase its

  8. A.

     Moment of inertia

    B.

     Velocity

    C.

     Acceleration

    D.

     Momentum


  9. It is difficult to cook rice

  10. A.

     At the top of a mountain

    B.

     At the sea level

    C.

     Under a mine

    D.

     Same anywhere


  11. Energy per unit volume is dimensionally equal to

  12. A.

     Pressure

    B.

     Force

    C.

     Density

    D.

     Work


  13. To open a door easily, the handle should be fixed

  14. A.

     Near the hinges

    B.

     Away from mid-point opposite to hinges

    C.

     In the middle

    D.

     None of these


  15. Water boils at a lower temperature on the hills because

  16. A.

     It is cold on the hills

    B.

     There is less carbon dioxide on the hills

    C.

     There is a decrease in air pressure on the hills

    D.

     There is less oxygen


  17. The force exerted by a magnet is an example of ________

  18. A.

     Non-contact force

    B.

     Muscular force

    C.

     Contact force

    D.

     Electrostatic force


  19. A man standing close to the platform at a railway station experiences a pulling force towards a fast moving train because of ________ .

  20. A.

     Gravitational force between train and man

    B.

     Illusion of the man

    C.

     The centripetal force

    D.

     Pressure difference due to fast moving air in between