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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
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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A 36 Ω galvanometer is shunted by resistance of 4 Ω. The percentage of the total current
- If the alternating current I=I₁ cosωt+I₂ sinωt, then the rms current is given by
- A thin equiconvex lens of refractive index 3/2 and radius of curvature 30 cm
- A particle in simple harmonic motion is described by the displacement function
- A speeding motorcyclist sees traffic jam ahead him. He slows down to 36 km per hour
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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