MCQOPTIONS
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| 1. |
In magnaglo, the wavelength of ultraviolet light is |
| A. | 2500 to 3000a ° |
| B. | 3500 to 4000a ° |
| C. | 4500 to 5000a ° |
| D. | none of the above |
| Answer» C. 4500 to 5000a ° | |