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CDS I 2017 GK Q27

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1. Consider the electromagnetic radiations having wavelengths 200 nm, 500 nm and 1000 nm. Which wavelength(s) of the following can make visual sensation to a human eye?

200 nm and 500 nm

500 nm and 1000 nm

500 nm only

200 nm and 1000 nm

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CDS I 2017 GK Q27

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