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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
- A ballet dancer, dancing on smooth floor, is spinning about a vertical axis
- The work function of metals is in the range of 2 eV to 5 eV.
- A solid cylinder of mass 50kg and radius 0.5 m is, free to rotate about the horizontal axis
- A body of mass 3 kg acted upon by a constant force is displaced by S meter
- Which one of the following statements is WRONG in the context of X-rays generated
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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