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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: - The ionisation potential of hydrogen-atom is -13.6 eV. An electron in the groundstate
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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 ionisation potential of hydrogen-atom is -13.6 eV. An electron in the groundstate
- A cyclotron is used to accelerate
- A wire of a certain material is stretched slowly by ten percent. Its new resistance
- Two identical charges repel each other with a force equal to 10 mgwt they are 0.6 m
- A ray of light travelling in a transparent medium of refractive index µ, falls on surface
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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