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Magnetism and Matter mcq. We covered all the Magnetism and Matter mcq in this post for free so that you can practice well for the exam.
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Mock test on Magnetism and Matter for Students
Iron exhibits ferromagnetic behavior:
a) At 770 °C
b) Above 770 °C
c) Below 770 °C
d) At all temperatures
Option c – Below 770 °C
In an unmagnetized magnetic material, the magnetic domains are aligned:
a) At 60°
b) At 90°
c) In random directions
d) At 150°
Option c – In random directions
At the Curie temperature, the permeability of iron:
a) Decreases by a certain amount
b) Becomes zero
c) Becomes negative
d) Falls but remains slightly greater than unity
Option d – Falls but remains slightly greater than unity
To shield sensitive magnetic instruments from external magnetic fields, they are enclosed in a box made of:
a) Plastic
b) Wood
c) Highly conductive Metals
d) Soft iron with high permeability
Option d – Soft iron with high permeability
The magnetic field intensity due to a magnetic dipole varies with distance as rⁿ, where the value of n is:
a) 2
b) −2
c) 3
d) −3
Option d – −3
For diamagnetic materials, the magnetic susceptibility is:
a) Small and negative
b) Small and positive
c) Large and negative
d) Large and positive
Option a – Small and negative
A material that slowly moves toward the pole of a magnet is most likely:
a) Diamagnetic
b) Paramagnetic
c) Ferromagnetic
d) Any substance
Option b – Paramagnetic
If magnetic lines of induction are repelled away from a substance, the substance is:
a) Ferromagnetic
b) Electromagnetic
c) Paramagnetic
d) Diamagnetic
Option d – Diamagnetic
Substances whose magnetic permeability is less than unity are classified as:
a) Diamagnetic
b) Paramagnetic
c) Ferromagnetic
d) Non-magnetic
Option b – Paramagnetic
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