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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 total kinetic energy of a body of mass 10 kg and radius 0.5 m moving with a velocity
- If vₑ is escape velocity and vₙ is orbital velocity of a satellite
- According to Hook’s law, force is proportional to
- Point masses m₁ and m₂ are placed at the opposite ends of a rigid rod of length L,
- Charge passing through a conductor of cross-section area A=0.3 m² is given
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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