Which of the following properties of a magnet is used in a metal detector for detecting metals?
A
Attraction property of unlike poles
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B
Repulsion property of like poles
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C
Magnetic field
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D
(a) and (b) above.
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Solution
The correct option is C Magnetic field Metal detector works based on the principle of magnetic field.
The magnet present in the metal detector creates a magnetic field and picks up the magnetic field generated by the metal thereby detecting it.