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 shows ferromagnetic properties:
(A) At 770 °C
(B) Above 770 °C
(C) Below 770 °C
(D) At all temperature
Option c – Below 770 °C
In the unmagnetized state, magnetic domains of magnetic substance are oriented at :
(A) 60°
(B) 90°
(C) Randomly
(D) 150°
Option c – Randomly
At curie temperature the permeability of Iron :
(A) Decreases by some value
(B) Becomes zero
(C) Reduces below zero
(D) Decreases but remains slightly greater than one
Option d – Decreases but remains slightly greater than one
To avoid the effect of external magnetic field on the sensitive magnetic instruments, these instruments are kept inside a box of
(A) Plastic
(B) Wood
(C) Metals of high conductivity
(D) Soft iron of high permeability
Option d – Soft iron of high permeability
Magnetic field intensity due to dipole varies as d”, where n is :
(A) 2
(B) – 2
(C) 3
(D) – 3
Option d – – 3
For diamagnetic materials, 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 piece of material is found to be moving slowly towards a pole of a magnet. The material must be :
(A) Diamagnetic
(B) Paramagnetic
(C) Ferromagnetic
(D) Any substance
Option b – Paramagnetic
If the magnetic lines of induction will move away from the substance, then the substance is :
(A) Ferromagnetic
(B) Electromagnetic
(C) Paramagnetic
(D) Diamagnetic
Option d – Diamagnetic
If the permeability of substances is less than one, then the substances are:
(A) Diamagnetic
(B) Paramagnetic
(C) Ferromagnetic
(D) Nonmagnetic
Option b – Paramagnetic
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