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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 resistance of a wire is 5 ohm at 50° C and 6 ohm at 100° C. The resistance
- In the Bohr’s model of hydrogen atom, the ratio of the kinetic energy to the total
- When a radioactive substance emits an ∝ particle, its position in the periodic table
- The frequencies of X-rays,γ-rays and ultraviolet rays are respectively p,q and r
- If vₑ is escape velocity and vₙ is orbital velocity of a satellite
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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