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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
Related Questions: - A body starts from rest with an acceleration of 2 m/s². After 5 second,
- Two wires of equal length and equal diameter and having resistivities ρ₁ and ρ₂
- The radioactivity of a certain material drops to 1/16 of the initial value in 2 hours.
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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 body starts from rest with an acceleration of 2 m/s². After 5 second,
- Two wires of equal length and equal diameter and having resistivities ρ₁ and ρ₂
- The radioactivity of a certain material drops to 1/16 of the initial value in 2 hours.
- A proton of mass m and charge q is moving in a plane with kinetic energy E. If there exists
- A ship of mass 3 x 10⁷ kg initially at rest is pulled by a force of 5 x 10⁴ N through
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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