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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 tyre filled with air (27° C and 2 atm) bursts. The temperature of air is (ˠ=1.5)
- The work of 146 kJ is performed in order to compress one kilo mole fo gas adiabatically
- If particles are moving with same velocity, then maximum de Broglie wavelength will
- A neutron moving with velocity v collides with a stationary particle
- In the spectrum of hydrogen, the ratio of the longest wavelength in the Lyman 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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