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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 electric vector vibration of an electromagnetic wave is given by
- The threshold frequency for a certain photosensitive metal is ν₀. When it is illuminated
- The identical cells connected in series are needed to heat a wire of length one meter
- The maximum wavelength of radiations emitted at 900K is 4 µm. What will be the maximum
- Energy stored in the coil of a self inductance 40 mH carrying a steady current of 2A
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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