Check out these 15 multiple-choice questions on Physics Magnetism and Matter Each MCQ will have four options here, out of which only one is correct. Students have to pick the correct option and check the answer provided here.
1. What do we call a substance that is strongly attracted to a magnet?
Answer:
Explanation:
Ferromagnetic materials, like iron and nickel, are strongly attracted to magnets.
2. Which end of a magnet will point to the geographic North when freely suspended?
Answer:
Explanation:
The north-seeking pole of a magnet, which points toward Earth's geographic North, is considered its South pole.
3. What is the area around a magnet where its force can be felt called?
Answer:
Explanation:
The region around a magnet where its force can be detected is called its magnetic field.
4. Which of the following is NOT a natural magnet?
Answer:
Explanation:
Copper is not a natural magnet. Lodestone is a naturally occurring form of magnetite that behaves as a magnet.
5. In which material are the magnetic moments of individual atoms randomly oriented?
Answer:
Explanation:
In diamagnetic materials, the magnetic moments of individual atoms are randomly oriented and, overall, cancel each other out.
6. Which of the following is NOT a property of magnetic lines of force?
Answer:
Explanation:
Magnetic lines of force are imaginary lines that represent the magnetic field. They cannot be seen.
7. Earth's core is believed to be responsible for its magnetism because it contains:
Answer:
Explanation:
Earth's core contains molten iron, which is believed to be responsible for generating its magnetic field.
8. The angle between the geographic north and the magnetic north is known as:
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Explanation:
Magnetic declination is the angle between the geographic north (true north) and the magnetic north.
9. A substance that is weakly repelled from a magnetic field is called:
Answer:
Explanation:
Diamagnetic substances are weakly repelled by a magnetic field.
10. The phenomenon by which a magnetic material becomes a magnet when placed in a magnetic field is called:
Answer:
Explanation:
When a magnetic material is placed in a magnetic field and becomes magnetized, it's referred to as magnetization.
11. The property of a material to retain its magnetic properties after the magnetizing force is removed is known as:
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Explanation:
Retentivity is the ability of a material to retain its magnetism after the magnetizing force is removed.
12. Bar magnets always have:
Answer:
Explanation:
Bar magnets always have two poles – a north pole and a south pole.
13. Magnetic poles always exist in pairs due to:
Answer:
Explanation:
According to Gauss's Law for Magnetism, magnetic monopoles do not exist, meaning magnetic poles always come in pairs.
14. The region inside a solenoid where the magnetic field is nearly uniform is called:
Answer:
Explanation:
The region inside a solenoid where the field is nearly uniform is often referred to as the magnetic core.
15. Temporary magnets are made of:
Answer:
Explanation:
Temporary magnets are made of soft magnetic materials which lose their magnetism when the magnetic force is removed.