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`         If a black body radiates 20 calories per second at 227°C, it will radiate at 727°C`
2 years ago

## Answers : (1)

Arun
24740 Points
```							Energy emitted by a body is directly proportional to T^4 (Stefan's law) so E1/E2 = (T1/T2)^4 x/20 = (727+273/227+273)^4 ..Absolute temp in Kelvin x = 16*20 = 320 calories per second
```
2 years ago
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### Course Features

• 110 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions