When a magnetic substance is heated then it
Correct answer: B. Loses its magnetism
- A. Remains the same
- B. Loses its magnetism
- C. Becomes a strong magnet
- D. Either (a) or (c)
Explanation
The correct answer is that when a magnetic substance is heated, it loses its magnetism. This is because the thermal energy disrupts the alignment of the magnetic domains, causing the material to lose its magnetic properties. This effect is particularly noticeable when the temperature exceeds the Curie point, the temperature at which a ferromagnetic material becomes paramagnetic. Option A is incorrect as the properties do change with temperature. Option C is incorrect because heating generally weakens magnetism. Option D is incorrect because it presents mutually exclusive outcomes that are not supported by the behaviour of magnetic substances.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Physics of Solids
Solids are compared through crystal structure, amorphous arrangement, elasticity, plastic deformation, stress, strain and Young’s modulus. Electrical behavior depends on available charge carriers and band structure, so conductors, insulators and semiconductors must be distinguished from mechanical properties such as strength, stiffness and brittleness.
Practise Physics of Solids
320 free Physics of Solids MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 11 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Physics of Solids questions
Electromagnets are made up of soft iron because soft iron has
A diamagnetic material in a magnetic material moves
Curie temperature of iron is the temperature below which it is
Two wire of some material have length 1: 3 when equal force are applied upon it their extension will be?
Two wires of same nature and dimension have lengths 1 : 3 to produce the same amount of extension in them the required ratio of forces F1:F2 will be
Two wires of some nature have L2=3L1 and D1 = 3D2 for some extension F1/F2