[Quiz] Science Physics - Magnetism - Free Online Tests - 9 - TNPSC GURU - TNPSC Group 4 2017 Notification 9351 Vacancies - TNPSC

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Wednesday, October 25

[Quiz] Science Physics - Magnetism - Free Online Tests - 9

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TNPSC Free Online Test by TNPSC GURU.in
Subject
Science

Exam Portions
Physics - Magnetism
Science Physics- Free Online Tests - 9
No of Questions
20
Duration
10 Min
Difficulty Level
Easy
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Next Test>> : Science Physics Online Test Series No: 10
TNPSC Free Online Test

  1. Chinese know the property of magnet since
    1.  1100 AD
    2.  1000 BC
    3.  1100 BC
    4.  2000 BC

  2. Magnetic compass was used by chinese since
    1.  1100 AD
    2.  1000 BC
    3.  2000 BC
    4.  1100 BC

  3. Who told that earth behaves as a giant bar magnet
    1.  Gilbert
    2.  Albert einstein 
    3.  Newton
    4.  Johannes Kepler

  4. Earth's magnetic field extends to a height of
    1.  2 times the radius of earth
    2.  3 times the radius of earth
    3.  4 times the radius of earth
    4.  5 times the radius of earth

  5. Choose the correct answer
    1.  Earth's magnetism is also due to the electric currents of the earth
    2.  Earth's magnetism is also due to the radiation of the sun
    3.  Earth's magnetism is also due to the action of the moon
    4.  All the above are correct

  6. Magnetic length is ______ the geometric length
    1.  always more than
    2.  less than
    3.  more than
    4.  equal to

  7. Magnetic poles exists in
    1.  Single
    2.  Neither Single nor Pairs
    3.  Single or Pairs
    4.  Pair

  8. Unit of Pole Strength
    1.  ampere metre
    2.  ampere metre square
    3. Weber
    4.  Tesla

  9. Unit  of magnetic dipole
    1. Weber
    2.  ampere metre
    3.  ampere metre square
    4. Tesla

  10. Curie Temperature is a transition temperature at which
    1.  ferromagnetic become diamagnetic
    2.  ferromagnetic become paramagnetic
    3.  diamagnetic become ferro magnetic
    4.  paramagnetic become ferromagnetic

  11. Curie temperature for iron is ___ K
    1.  500
    2.  273
    3.  2000
    4.  1000

  12. Magnetic tapes uses
    1.  all the below
    2.  paramagnetic
    3.  diamagnetic
    4.  ferromagnetic

  13. Which of the below is not a ferromagnetic substance
    1.  Al
    2.  Fe
    3.  Co
    4.  Ni

  14. Which of the following is not a paramagnetic substance
    1.  Mn
    2.  Cr
    3.  Pt
    4.  Bi

  15. Which of the following is not a diamagnetic substance
    1.  Sb
    2.  Au
    3.  Hg
    4.  Cuso4

  16. In dia magnetic the net magnetic moment of  atoms is
    1.  One
    2.  Zero
    3.  Low Positive Value
    4.  Very Large

  17. Unit for Magnetic Suscptiblity
    1.  Tesla
    2.  Ampere
    3. Weber
    4.  No Unit

  18. Island of Magnesia is in
    1.  Greece
    2. China
    3.  India
    4. West Indies

  19. Non Uniform Magnetic field can be
    1.  Only Divergent
    2.  Only convergent
    3.  Convergent or divergent
    4.  parallel

  20. Direction of magnetic lines of force inside a magnet
    1.  North Pole to South Pole
    2.  South Pole to North Pole
    3.  Both a and b
    4. All are wrong



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