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Magnetism(General Knowledge > General Science ) Questions and Answers
Home
Topic
General Knowledge
General Science
Magnetism
Question 1.
For which of the following is magnetic susceptibility negative?
Diamagnetic Materials
Ferromagnetic Materials only
Paramagnetic Materials only
Paramagnetic and Ferromagnetic materials
Explanation:-
Answer: Option A. ->
Diamagnetic Materials
Question 2.
Indicate which of the following material does not retain magnetism permanently
Soft iron
Stainless steel
Hardened steel
None of the above
Explanation:-
Answer: Option A. ->
Soft iron
Question 3.
Which of the following materials is the most suitable for making a permanent magnet?
Steel
Copper
Nickel
Soft Iron
Explanation:-
Answer: Option A. ->
Steel
Question 4.
A long magnet is cut into two parts such that the ratio of their lengths is 2:1
1:2
2:1
4:1
Equal
Explanation:-
Answer: Option D. ->
Equal
Question 5.
What happens to the magnetic moment if a hole is made at the centre of a bar magnet?
Decreases
Increases
Not a change
None of the above
Explanation:-
Answer: Option C. ->
Not a change
Question 6.
Which of the following is expected to have the maximum permeability?
Brass
Copper
Zinc
Ebonite
Explanation:-
Answer: Option D. ->
Ebonite
Question 7.
Magnetic lines of force of a bar magnet do not intersect because
The lines need magnetic lenses to intersect
A point always has a single net magnetic field
The lines always diverge from a single point
The lines have similar charges hence they repel each other
Explanation:-
Answer: Option B. ->
A point always has a single net magnetic field
Question 8.
In a moving coil galvanometer, we use a radial magnetic field so that the galvanometer scale is
linear
algebraic
exponential
logarithmic
Explanation:-
Answer: Option A. ->
linear
Question 9.
Which of the following has higher magnetic susceptibility?
paramagnetic
ferromagnetic
diamagnetic
None of these
Explanation:-
Answer: Option B. ->
ferromagnetic
Question 10.
Basic source of magnetism
Charged particles alone
Movement of charged particles
Magnetic dipoles
Magnetic domains
Explanation:-
Answer: Option A. ->
Charged particles alone
1
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