Brief the working of a metal detector and give two to three of its applications in daily life.
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Solution
A metal detector detects metals by inducing a magnetic field in them and in return the receiver picks up that magnetic field while indicating the presence of it.
Metal detectors are used for screening purpose in malls, airports, railway stations and any other public place where security is needed.
Also, they are employed in food processing industry to detect the presence of any metal in the edible products.
Metal detectors are also used in the mining industry to find precious metals buried in earth.