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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
- In a series resonant LCR circuit, the voltage across R is 100 volts and R =1kΩ
- A electric dipole is placed at an angle of 30⁰ to a non-uniform electric field.
- A proton and an alpha particle both enter a region of uniform magnetic field B,
- If force(F),length(L) and time(T) be considered fundamental units, then the units of mass
- A wheel of mass 10 kg has a moment of inertia of 10 kgm² about its own axis
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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