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Q: The emissive power of a black body at 400 K is 1.0 × 10⁵ joule per sec per m² . Temperature of the black body at which its emissive power become 16.01 × 10⁵ joules per sec per m² is?
  • A. 400K
  • B. 800K
  • C. 1200K
  • D. 200K
Correct Answer: Option B -
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Explanations:

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