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प्रश्न
Obtain information about the function of metal detectors.
कृति
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उत्तर
A metal detector is a device that detects metal objects. It works by producing an electromagnetic field using a coil.
When the detector is moved over a metal object, the electromagnetic field changes, which creates a signal in the detector. This signal helps to locate the metal object.
Metal detectors are commonly used in:
- Security checks (airports, events)
- Finding buried treasures (coins, jewelry)
- Industry (detecting metals in food or products)
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