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| 1. |
Two copperr spheres of radii 6 cm and 12 cm respectively are suspended in an evacuated enclosure. Each of them are at a temperature `15^(@)C` above the surroundings. The ratio of their rate of loss of heat isA. `2:1`B. `1:4`C. `1:8`D. `8:1` |
| Answer» Correct Answer - `1:4` | |