Physics · Magnetism and Matter
Magnetic shielding of a delicate instrument from external magnetic fields is best achieved by enclosing it inside a chamber made of:
- 1A paramagnetic material such as tantalum
- 2A paramagnetic material such as aluminium
- 3A diamagnetic material such as copper
- 4A soft ferromagnetic material such as soft iron✓
Correct answer
A soft ferromagnetic material such as soft iron
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