Which of the following, the most suitable material for making permanent magnet is
Correct answer: D. Nickel
- A. Aluminium
- B. Bismuth
- C. Copper
- D. Nickel
Explanation
The correct answer is Nickel. Nickel is a ferromagnetic material, which means it can be magnetised and retain its magnetisation over time, making it an excellent choice for creating permanent magnets. In contrast, Aluminium, Bismuth, and Copper are not suitable for making permanent magnets. Aluminium and Copper are non-magnetic materials, while Bismuth exhibits diamagnetism, which means it actually repels magnetic fields and cannot retain magnetisation.
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
On stretching a wire, the elastic energy stored per unit volume is
When force is applied on a body, then the elastic potential energy is stored in it. On removing the force, this energy
When strain is produced in a body within elastic limit, its internal energy
In the case of bar magnet, lines of magnetic induction
Magnetic induction is a
Magnetic field intensity is defined as