find the dimensions of steffan's constant?
Answers
Answered by
6
It is the constant of proportionality in Stefan-Boltzmann law of Blackbody radiation.
...
Stefan Boltzmann Constant Value
Types of units Stefan Boltzmann Units
constant value
Thermochemistry σ ≈ 11.7×108 cal.cm2.day1.K4
US Customary units σ ≈ 1.714×109 BTU.hr1.ft2.°R4.
Answered by
3
Answer
Power radiated by a body P=σAeT 4
where σ is the Stefan's constant, e is the emmissivity of the body, A is the surface area of the body and T is its temperature.
Dimensions of power [P]=[ML 2 T −3 ]
Dimensions of area [A]=[L 2 ]
Dimensions of temperature [t]=[K]
Emmissivity e is a dimensionless quantity.
∴ Dimensions of Stefan's constant [σ]= [L 2 ][K 4 ][ML 2 T −3 ]
⟹ [σ]=[M 1 L 0 T −3 K −4 ]
Attachments:
Similar questions