Magnetism Class-9 Exe-10A MCQs Concise Physics ICSE Selina Solutions Ch-9. In this article you would learn to solve MCQS on Induced Magnetism and Neutral Point. Visit official Website CISCE for detail information about ICSE Board Class-9 Physics.
Magnetism Class-9 Exe-10A MCQs Concise Physics ICSE Selina Solutions Ch-9
| Board | ICSE |
| Class | 9 |
| Subject | Physics |
| Writer / Publication | Concise Selina Publishers |
| Chapter-10 | Magnetism |
| Exe-10A | Induced Magnetism and Neutral Point |
| Topics | Solution of Exe-10A MCQs Type |
| Academic Session | 2025-2026 |
Induced Magnetism and Neutral Point
Magnetism Exe-10A Concise Physics ICSE Class 9 Selina Publishers Solutions
Page 230 (Choose the correct answer from the options given below).
Que-1: The first known magnets were pieces of :
(a) bauxite
(b) lodestone
(c) limestone
(d) None of the above
Ans: (b) lodestone
Hint- The first known magnets were pieces of loadstone, an ore of iron oxide (Fe3O4) found in large quantities in Magnesia, in Asia Minor.
Que-2: If a magnet is suspended with a silk thread such that it is free to rotate in a horizontal plane, it sets itself always pointing in the :
(a) geographic east-west direction
(b) magnetic east-west direction
(c) geographic north-south direction
(d) None of the above
Ans: (c) geographic north-south direction
Hint- If a magnet is suspended with a silk thread such that it is free to rotate in a horizontal plane, it will align itself in the geographic north-south direction. This alignment is due to the Earth’s magnetic field, which exerts a force on the magnet and causes it to align along the magnetic field lines.
Que-3: The …………… magnetism acquired by a magnetic material when it is kept near a magnet is called …………… magnetism.
(a) temporary, induced
(b) permanent, induced
(c) temporary, permanent
(d) None of the above
Ans: (a) temporary, induced
Hint- Due to magnetic induction, a piece of magnetic material acquires the magnetic properties temporarily in presence of another magnet near it.
Que-4: Two like magnetic poles:
(a) repel each other
(b) attract each other
(c) first attract each other, then repel
(d) neither attract nor repel.
Ans: (a) repel each other
Hint- Two like magnetic poles, meaning two north poles or two south poles, repel each other.
Que-5: A magnetic pole induces …………… polarity on the near end and a …………… polarity on the farther end of the iron bar.
(a) opposite, opposite
(b) similar, similar
(c) opposite, similar
(d) similar, opposite
Ans: (c) opposite, similar
Hint- A magnetic pole induces opposite polarity on the near end and a similar polarity on the farther end of the iron bar.
Que-6: Out of the following, the incorrect statement(s) is/are :
(i) Magnetic field lines are open and continuous curves.
(ii) Outside the magnet, magnetic field lines are directed from the south pole to the north pole of the magnet.
(a) (i)
(b) (ii)
(c) both (i) and (ii)
(d) none of the above
Ans: (c) both (i) and (ii)
Hint- The correct statements are :
- They are closed and continuous curves.
- Outside the magnet, they are directed from the north pole towards the south pole of the magnet.
Que-7: An iron rod buried inside the earth along …………… direction becomes a magnet.
(a) east-west
(b) equatorial
(c) north-south
(d) any direction
Ans: (c) north-south
Hint- The Earth itself acts as a giant magnet. When the iron rod is aligned in the same direction as the Earth’s magnetic field lines (i.e., north-south direction), it gets magnetised due to magnetic induction.
Que-8: The sum of all magnetic fields adds up to zero at the :
(a) north pole
(b) south pole
(c) equator
(d) neutral points
Ans: (d) neutral points
Hint- At each neutral points, the resultant magnetic field is zero.
Que-9: In a uniform magnetic field, the field lines are:
(a) curved
(b) parallel and equidistant straight lines
(c) parallel, but non-equispaced straight lines
(d) nothing can be said.
Ans: (b) parallel and equidistant straight lines
Hint- Parallel and equidistant field lines represent a uniform magnetic field.
Que-10: The magnetic field lines in a non-uniform magnetic field are :
(a) either converging or diverging
(b) parallel and equispaced
(c) only converging
(d) only diverging
Ans: (a) either converging or diverging
Hint- The magnetic field around a bar magnet (or horse shoe magnet) is non-uniform. The magnetic field lines in a non-uniform magnetic field are not equispaced and parallel, but they are curved (either converging or diverging).
Que-11: The magnetic field lines of the earth are …………… to the earth’s surface near the magnetic poles and …………… to the earth’s surface near the magnetic equator.
(a) parallel, normal
(b) normal, parallel
(c) normal, normal
(d) parallel, parallel
Ans: (b) normal, parallel
Hint- The magnetic field lines of the earth are normal to the earth’s surface near the magnetic poles and parallel to the earth’s surface near the magnetic equator.
Page 231
Que-12: The direction of a magnetic field at a point on a magnetic field line is given by :
(a) a tangent at that point
(b) a normal bisector at that point
(c) both tangent and normal bisector at that point
(d) none of the above
Ans: (a) a tangent at that point
Hint- A magnetic field line is a continuous curve in magnetic field such that tangent at any point of the curve gives the direction of the magnetic field at that point.
Que-13: A soft iron bar is tied by a thread in the middle and is suspended from a rigid support such that it is free to rotate in a horizontal plane. It shall come to rest :
(a) along north-south direction
(b) along east-west direction
(c) equally inclined to N-S and E-W direction
(d) in any direction
Ans: (d) in any direction
Hint- As the soft iron bar is not magnetized, hence it will not align itself with the Earth’s magnetic field and will come to rest in any direction.
Que-14: The figure given below shows two iron nails attached to the end of a magnet. Choose the correct figure:
Ans: Option (a) is correct
Hint- The lower ends of both the iron nails will repel each other since they have same polarities (north pole in this case).
Que-15: A freely suspended bar magnet is taken to the north pole of the earth. It comes to rest :
(a) in any direction
(b) parallel to the earth’s surface
(c) nearly vertical with the south pole in a downward direction
(d) nearly vertical with the north pole in a downward direction.
Ans: (c) nearly vertical with the south pole in a downward direction
Hint- A freely suspended bar magnet is taken to the north pole of the earth. It comes to rest nearly vertical with the south pole in a downward direction.
Que-16: Which of the following is not a correct statement for a magnet placed in the earth’s magnetic field ?
(a) Neutral points are always at an equal distance from the magnet.
(b) The position of neutral points depends on the direction of the magnet in the earth’s magnetic field.
(c) The position of neutral points does not depend on the direction of the magnet.
(d) The magnetic field strength is zero at the neutral points.
Ans: (c) The position of neutral points does not depend on the direction of the magnet.
Hint- As neutral points are the points at which two magnetic fields are equal in magnitude but opposite in direction, hence, the position of neutral points depends on the direction of the magnet. Therefore, the statement “The position of neutral points does not depend on the direction of the magnet” is incorrect.
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