- 1(current)
Q. No.A spherical black body with a radius of 12 cm radiates 450-watt power at 500 K. If the radius were halved and the temperature doubled, the power radiated in watts would be:
| 1. | 225 | 2. | 450 |
| 3. | 1000 | 4. | 1800 |
Subtopic: Stefan-Boltzmann Law |
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