52. The dimension of radiant emittance of a blackbody as per Stefan-Boltzmann law is:
1)
M1 L2 T-2
2)
M0 L1 T-1
3)
M1 L0 T-3
4)
M1 L-1 T-2
Black
body radiant emittance E=\sigma T^4
\sigma
- Stefan Boltzmann constant =5.67037*10^{-8} W/m^2K^4
T-
Thermodynamic Temperature
E=
\frac{W}{m^2K^4} K^{4}
E=\frac{W}{m^2}
1watt=joule/second
E=\frac{joule}{s.m^2} ---(1)
Joule is the unit of work
work= Force* displacement
=N.m
=\frac{Kg.m^2}{s^2 }
Substitute in above equation,
E=\frac{joule}{s.m^2}
E=\frac{kg.m^2}{s^3.m^2}
E=\frac{kg}{s^3}
Units of Emittance E is M^1 L^0 T^-3
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