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				| 1. | A black body of 0.2 m2 area has an effective temperature of 800 K. Calculate the intensity of normal radiations | 
| A. | 1234.65 W/m2 sr | 
| B. | 7396.28 W/m2 sr | 
| C. | 3476.74 W/m2 sr | 
| D. | 8739.43 W/m2 sr | 
| Answer» C. 3476.74 W/m2 sr | |