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Which of the following statement is TRUE of ultraviolet, visible and infra-red rays?

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Which of the following statement is TRUE of ultraviolet, visible and infra-red rays?

A. they are all electromagnetic waves with the same wavelength
B. ultra-violet rays have shorter wavelengths than infra-red rays and produce flourescence
C. infrared rays have shorter wavelength than visible light and produce the sensation of heat
D. the wavelenghts increase in the sequence: visible, ultra-violet, infra-red




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