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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
- An atom bomb weighing 1 kg explodes releasing 9×10¹³ J of energy.
- A shell of mass 200 g is ejected from a gun of mass 4 kg by an explosion
- An electric dipole of moment p is lying along a uniform electric field E. The work
- If seperation between screen and source is increased by 2%. What would be the effect
- In a coil having e.m.f. of 8 V induced for 0.05 s. The value of current changes
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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