QUESTION 16 The characteristic color of a transparent non-metal is determined by

Question

QUESTION 16 The characteristic color of a transparent non-metal is determined by the distribution of wavelengths of the absorbed light radiation that refracts off the surface. True o False QUESTION 17 What is the difference between fluorescence and phosphoresence? A. Phosphorescence requires the presence of phosphor and flourescence requires the presence of flourine. B. There is no difference between the two C. The difference between fluorescence from phosphorescence is the amount of time between photon absorption and reemission. Phosphoresence has a delay of less than a second; fluorescence occurs for longer times. D. The difference between fluorescence from phosphorescence is the amount of time between photon absorption and reemission. Fluorescence has a delay of less than a second; phosphorescence occurs for longer times.

Explanation / Answer

16-false it is nonabsorbed

17-d

9-true

10-A

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