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The Thermal Radiation Emitted by a Body is Proportional to Tn Where T is Its Absolute Temperature. the Value of N is Exactly 4 for - Physics

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Question

The thermal radiation emitted by a body is proportional to Tn where T is its absolute temperature. The value of n is exactly 4 for 

  •  a blackbody

  • all bodies

  • bodies painted black only

  • polished bodies only

Solution

 all bodies

From Stefan-Boltzmann law, the energy of the thermal radiation emitted per unit time by a blackbody of surface area A is given by `u = σAT^4` here , σ is Stefan-Boltzmann constant.
This law holds true for all the bodies.

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APPEARS IN

 HC Verma Solution for Concepts of Physics - Vol. 2 (2018 to Current)
Chapter 6: Heat Transfer
MCQ | Q: 4 | Page no. 97

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Solution The Thermal Radiation Emitted by a Body is Proportional to Tn Where T is Its Absolute Temperature. the Value of N is Exactly 4 for Concept: Qualitative Ideas of Blackbody Radiation.
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