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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoRadiationMedium2 minQB

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The variation of spectral emissive power for two spherical objects having radius R and 2R respectively are shown below. The ratio of their emissive powers are :-

Options:

Answer:

Solution:

$λ_{1} = λ /2, λ_{2} = λ$
$\frac{T _{1}}{T _{2}} = \frac{λ _{2}}{λ _{1}} = 2$
$\frac{E _{1}}{E _{2}} = (\frac{T _{1}}{T _{2}})^{4} = 2^{4} = 16$
Answer A.

Stream:JEESubject:PhysicsTopic:Heat & ThermoSubtopic:Radiation

⏱ 2mℹ️ Source: QB

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