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Absorption and Emission :: Discussion
| 9. | A black body at 200 K is found to emit maximum energy at a wavelength 14μm. When its temperature is raised to 1000K, then wavelength at which maximum energy emitted it? | |
| A. | 14mm | |
| B. | 7μm | |
| C. | 2.8μm | |
| D. | 28mm | |
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