MCQOPTIONS
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| 1. |
What will be the ratio of temperatures of sun and moon if the wavelengths of their maximum emission radiations rates are 140 Å and 4200 Å respectively [J & K CET 2004] |
| A. | 1 : 30 |
| B. | 30 : 1 |
| C. | 42 : 14 |
| D. | 14 : 42 |
| Answer» C. 42 : 14 | |