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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 value of Poisson’s ratio lies between
- A current of 5 A is flowing at 220 V in the primary coil of a transformer. If the voltage
- In an unbiased p-n junction, holes diffuse from the p-region to n-region because of
- To draw the maximum current from a combination of cells, how should be the cells
- A tuning fork of frequency x produces 4 beats with a source of 256 Hz and 8 beats
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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