 
			 
			MCQOPTIONS
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				| 1. | Sodium vapor lamp is usually used in street light, because | 
| A. | it is cheap | 
| B. | light from this is monochromatic and will not split through water droplets | 
| C. | it is pleasing to the eyes | 
| D. | it is brightly illuminating | 
| Answer» C. it is pleasing to the eyes | |