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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 particle is executing the motion x=Acos (ωt-θ). The maximum velocity of the particle is
- The magnetic field at the centre of a circular coil carrying current I ampere is B.
- A bus is moving with a speed of 10 ms⁻¹ on a straight road
- An alternating electric field, of frequency v, is applied across the dees (radius = R)
- If white light is used in Young’s double slit experiment
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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