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What device, a tool for studying astronomical phenomena, uses the fact that when a material is heated to................

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What device, a tool for studying astronomical phenomena, uses the fact that when a material is heated to incandescence it emits light that is characteristic of the atomic makeup of the material?

ARF probe
BPrism
CGalvanometer
DSpectroscope

Correct Option: 4  
posted Jul 6, 2018 by Puneet Batra

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