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General Knowledge :: Physics

  1. Magnetic keepers are used to protect magnets from :

  2. A.

     Earth's magnetic field

    B.

     Effect of other magnets

    C.

     Self-demagnetization

    D.

     Demagnetization due to heating

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  3. Which among the following is the fundamental quantity ?

  4. A.

     Volume

    B.

     Time

    C.

     Velocity

    D.

     Force

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  5. A bucket of water is hung from a spring balance. A piece of iron is suspended in the water without touching the sides or touching the bottom of the bucket. The reading of the spring balance

  6. A.

     Will increase

    B.

     Will decrease

    C.

     Does not change

    D.

     Varies with the increase of depth of the immersion of the iron piece

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  7. 1 amu is equivalent to

  8. A.

     1 eV

    B.

     931 eV

    C.

     931 KeV

    D.

     931 MeV

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  9. 1 m/s equals ________ km/hr

  10. A.

     5/16

    B.

     16/5

    C.

     18/5

    D.

     5/18

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  11. A light year is a measure of :

  12. A.

     Speed

    B.

     Velocity

    C.

     Distance

    D.

     Time

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  13. The time period of a seconds pendulum is

  14. A.

     1 second

    B.

     2 seconds

    C.

     0.5 second

    D.

     1.5 second

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  15. One billionth of a second is called

  16. A.

     Microsecond

    B.

     Picoseconds

    C.

     Millisecond

    D.

     Nanosecond

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  17. Which one of the following is the value of one nanometer?

  18. A.

     10-7 cm

    B.

     10-6 cm

    C.

     10-4 cm

    D.

     10-3 cm

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  19. If the length of a simple pendulum is halved then its period of oscillation is

  20. A.

     Doubled

    B.

     Halved

    C.

     Increased by a factor 2

    D.

     Decreased by a factor 2

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