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General Knowledge :: Physics

  1. In a magnetic field, the direction of motion of a current carrying conductor is given by

  2. A.

     Maxwell's right hand rule

    B.

     Lenz's rule

    C.

     Flemings left hand rule

    D.

     Kirchoff's law

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  3. The force between charged particles is called as:

  4. A.

     Nuclear Force

    B.

     Gravitational Force

    C.

     Centrifugal Force

    D.

     Electromagnetic Force

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  5. Moving electric charge produces :

  6. A.

     Magnetic field

    B.

     Sound waves

    C.

     Light rays

    D.

     Heat waves

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  7. Nuclear sizes are expressed in a unit named

  8. A.

     Fermi

    B.

     Angstrom

    C.

     Newton

    D.

     Tesla

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  9. Beta rays emitted by a radioactive material are

  10. A.

     The electrons orbiting around the nucleus

    B.

     Charged particles emitted by nucleus

    C.

     Neutral particles

    D.

     Electromagnetic radiations

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  11. At the center of the sun, fusion converts hydrogen into

  12. A.

     Helium

    B.

     Plutonium

    C.

     Water

    D.

     Carbon

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  13. Gamma rays have greatest similarity with

  14. A.

     A-rays

    B.

     B-rays

    C.

     X-rays

    D.

     U.V.-rays

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  15. Heavy water is used in nuclear reactor to

  16. A.

     Slow down neutron

    B.

     Absorb neutron

    C.

     Increase temperature

    D.

     Increase speed of neutron

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  17. Radiocarbon is produced in the atmosphere as a result of

  18. A.

     Collision between fast neutrons and nitrogen nuclei present in the atmosphere

    B.

     Action of ultraviolet light from the sun on atmospheric oxygen

    C.

     Action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere

    D.

     Lightning discharge in atmosphere

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  19. What are the particles emitted by radioactive element after 3 consecutive disintegration?

  20. A.

     2 alpha 1 beta

    B.

     1 alpha 1 beta

    C.

     2 beta 1 alpha

    D.

     2 beta 2 alpha

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