Share

# 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

ConceptQualitative Ideas of Blackbody Radiation

#### 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.

Is there an error in this question or solution?

#### APPEARS IN

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

#### Video TutorialsVIEW ALL [1]

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.
S