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A black body at 227⁰C radiates heat at the rate of 7cals/cm²s. At a temperature of 727⁰C, the rate of heat radiated in the same units will be:
Options
(a) 50
(b) 112
(c) 80
(d) 60
Correct Answer:
112
Explanation:
According to Stefan’s law, E ∞ σT⁴, T₁ = 500 K T₂ = 1000 K
E₂ / E₁ = (T₂ / T₁)⁴ = (1000 / 500)⁴ = 16
E₂ = 16 x 7 = 112 cal/ cm²s
Related Questions: - In a Rutherford scattering experiment when a projectile of charge Z₁ and mass M₁
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- The binding energy per nucleon in deuterium and helium nuclei are 1.1 MeV and 7.0 MeV
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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
- In a Rutherford scattering experiment when a projectile of charge Z₁ and mass M₁
- In a double slit experiment, the two slits are 1mm apart and the screen is placed 1 m
- The binding energy per nucleon in deuterium and helium nuclei are 1.1 MeV and 7.0 MeV
- When 1 kg of ice at 0⁰C melts to water at 0⁰C, the resulting change in its entropy
- At what angle should the two forces 2P and √2 P act,so that the resultant force is P√10?
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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