General Science. Physics. Magnetism

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physics online quiz

General Science. Physics. Magnetism

Who told that earth behaves as a giant bar magnet

1. Gilbert
2. Albert einstein
3. Newton
4. Johannes Kepler

Magnetic length is ______ the geometric length

1. always more than
2. less than
3. more than
4. equal to

Unit of magnetic dipole

1. Weber
2. ampere metre
3. ampere metre square
4. Tesla

Magnetic tapes uses

1. all the below
2. paramagnetic
3. diamagnetic
4. ferromagnetic

Which of the following is not a diamagnetic substance

1. Sb
2. Au
3. Hg
4. Cuso4

Island of Magnesia is in

1. Greece
2. China
3. India
4. West Indies

TNPSC Free Online Test Chinese know the property of magnet since

1. 1100 AD
2. 1000 BC
3. 1100 BC
4. 2000 BC

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

Unit of Pole Strength

1. ampere metre
2. ampere metre square
3. Weber
4. Tesla

In dia magnetic the net magnetic moment of atoms is

1. One
2. Zero
3. Low Positive Value
4. Very Large

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

Magnetic compass was used by chinese since

1. 1100 AD
2. 1000 BC
3. 2000 BC
4. 1100 BC

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

Magnetic poles exists in

1. Single
2. Neither Single nor Pairs
3. Single or Pairs
4. Pair

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

Curie temperature for iron is ___ K

1. 500
2. 273
3. 2000
4. 1000

Which of the below is not a ferromagnetic substance

1. Al
2. Fe
3. Co
4. Ni

Which of the following is not a paramagnetic substance

1. Mn
2. Cr
3. Pt
4. Bi

Unit for Magnetic Suscptiblity

1. Tesla
2. Ampere
3. Weber
4. No Unit

Non Uniform Magnetic field can be

1. Only Divergent
2. Only convergent
3. Convergent or divergent
4. parallel

All 20 questions completed!


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