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UPSC NDA II 2010 General Ability Paper

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PART B : GENERAL KNOWLEDGE

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Question : 65

Total: 150

The visible light has a wavelength range from about 380 nm (violet) to 780 nm (red). If an excited object emits light with wavelength of 15 nm, to which one of the following ranges does it belong?

X-ray
Gamma ray
Infrared
Ultraviolet

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