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प्रश्न
Name the radiation that is used in the detection of the purity of gemstones. State its source.
लघु उत्तर
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उत्तर
The radiation used in the detection of the purity of gemstones is Ultraviolet (UV) radiation.
The primary natural source of this radiation is the Sun, while artificial sources include an electric arc or a mercury-vapour lamp.
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