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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
Related Questions: - A source of unknown frequency gives 4 beats/s, when sounded with a source harmonic
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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 source of unknown frequency gives 4 beats/s, when sounded with a source harmonic
- The innermost orbit of hydrogen atom has a diameter 1.06Å. The diameter of tenth
- Two charges of equal magnitude q are placed in air at a distance 2a
- A stone tied to the end of a string of 1 m long is whirled in a horizontal circle
- According to Bohr model of hydrogen atom, only those orbits are permissible
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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