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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
- If longitudinal strain for a wire is 0.03 and its poisson’s ratio is 0.5
- The resistance in the two arms of the meter bridge are 5Ω and RΩ, respectively
- A particle moves along with x-axis.The position x of particle with respect to time
- Two concentric spheres kept in air have radii R and r.
- The work function for metals A,B abd C are respectively 1.92 eV,2.0 eV and 5 eV.
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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