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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
- A round uniform body of radius R, mass M and moment of inertia I rolls down
- A particle of mass 100 g is thrown vertically upwards with a speed of 5 m/s. The work
- Watt hour mter measures
- Thin uniform rod of length L, cross-sectional area A and density ρ is rotated
- Three capacitors each of capacitance C and of breakdown voltage V are joined in series
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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