MCQOPTIONS
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MCQOPTIONS
| 1. |
A black body radiates energy at the rate of \[1\times {{10}^{5}}J/s\times {{m}^{2}}\] at temperature of \[227{}^\circ C\]. The temperature to which it must be heated so that it radiates energy at rate of \[1\times {{10}^{9}}J\text{/}s{{m}^{2}}\], is |
| A. | 5000 K |
| B. | 5000\[{}^\circ C\] |
| C. | 500 K |
| D. | 500\[{}^\circ C\] |
| Answer» B. 5000\[{}^\circ C\] | |