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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
- A small signal voltage V(t)=V₀ sin ωt is applied across an ideal capacitor C
- A string in musical instrument is 50 cm long and its fundamental frequency is 800 Hz.
- A thermodynamic system undergoes cyclic process ABCDA as shown in figure
- To convert a 800 mV range millivoltmeter of resistance 40Ω into an ammeter of 100 mA
- The kirchoff’s first law (∑i=0) and second law (∑iR=∑E), where the symbols
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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