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| 1. |
The radiation emitted by a star A is 10,000 times that of the sun. If the surface temperatures of the sun and the star A are 6000 K and 2000 K respectively, the ratio of the radii of the star A and the sun is [EAMCET 2003] |
| A. | 300 : 1 |
| B. | 600 : 1 |
| C. | 900 : 1 |
| D. | 1200 : 1 |
| Answer» D. 1200 : 1 | |