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A black body is at 727⁰C. It emits energy at a rate which is proportional to
Options
(a) (1000)⁴
(b) (1000)²
(c) (727)⁴
(d) (727)²
Correct Answer:
(1000)⁴
Explanation:
According to Stefan’s law, E α T⁴
E α (t + 273)⁴ K [723⁰C = (727 + 273)K]
E α (727 + 273)⁴ K
E α (1000)⁴ K
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Topics: Properties of Bulk Matter
(130)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The magnifying power of a telescope is 9. When it is adjusted for parallel rays
- Copper of fixed volume V is drawn into wire of length l. When this wire is subjected
- In p- type semiconductor, the acceptor level lies
- Two lenses of power 15 D and -3 D are placed in contact.
- A tuning fork A produces 4 beats per second with another tuning fork B of frequency
Topics: Properties of Bulk Matter (130)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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